Figure Eights With Ears

I don't really like ears on my eights, since the make the eight larger without really adding anything. Some people think that ears keep the eight from locking off in a girth hitch. I have three points against that. First, if so, why are the ears in the wrong place? To see what I mean, look at the DMM Anka, which has the small ears placed in the right place. Second, if you rig the eight properly, it is almost impossible for the girth hitch to occur. Finally, even if it does, releasing it is trivial - if you have the rest of your gear set up properly and know what you are doing.

I get rather annoyed by the large number of badly-designed eights on the market. Instead of just copying each other, manufacturers ought to show some innovation. Look at the Morph 8 - now there is a new idea! It has its problems, but at least it shows some attempt at innovation. My own Open Eight is another innovative example, as is Tom Mayer's Lazy 8. The DMM Anka and the Faders Ballet have the right idea on where the ears should be. The Famau and Job are old exceptions that also put the ears in the right place.

If you want a good laugh, look at the weights of some of these eights!

More thoughts and data on Figure Eights with Ears

ID Device Description Acquired Weight Height Width Thickness Std. volume

1141 Advanced Base Camp Milled, soft anodized, round rope & lightening holes, lunar eye Kris Steele, 2008 242 174 171 13 378

936 Aircraft Materials Ltd. Milled, soft anodized, triangular ears, round top hole and eye eBay, 2004 231 173 122 13 264

1149 ASR Rescue 8 Milled, soft anodized, subtriangular body, trapezoidal top hole and subtriangular eye Alan Leach, 2008 273 162 162 13 339

922 Austrialpin Eight Special Milled, hard anodized, blended triangular ears, oval to D top hole, triangular eye Barrabés.com, 2003 101 114 95 10 108

1157 Blitz Safety 8 Milled, hard anodized, subhexagonal rope hole, long slot eye, side ears Tim Nolan, 2008 205 179 101 13 231

552 Blue Water Rescue 8 Forged, hard anodized, oval rope & lightening holes, lunar eye GearPro, 1999 216 171 149 16 408

925 Calma Antibloc Forged, soft anodized, twin-bar shank, low ears, round holes Barrabés.com, 2003 143 151 109 15 242

1158 Climbing Technology Ltd. Forged, soft anodized Al, lunar rope holes, oval eye, belay slot We're Not Scared Safety, 2008 246 172 172 16 463

311 CMC Rappel 8 Milled, soft anodized, round rope hole, large vertical oval eye Bob & Bob, 1990 158 132 140 13 240

309 CMC Rescue 8, Version A Forged, unfinished, steel, round rope hole, large vertical slot eye L&S Sporting Goods, 1989 635 168 167 14 393

310 CMC Rescue 8, Version B Forged, painted, steel, round rope hole, large vertical slot eye Bob & Bob, 1989 624 168 167 14 393

1027 CMC Survivor 8 Milled, hard anodized, triangular ears, round holes CMC, 2007 44 73 71 10 51

314 CMI Rescue 8 Forged, hard anodized, oval rope & lightening holes, lunar eye ? 219 167 151 17 429

316 DMM Anka Forged, unfinished, 90 degree twist Bob & Bob, 1987 188 142 84 47 561

927 Faders Ballet
Forged, hard anodized, bent, pentagonal rope hole, oval eye, low ears Barrabés.com, 2003 84 108 80 19 84

317 Famau,
Version A Forged?, unfinished, bent, rectangular rope hole /w spike, round eye Pathfinder Sports, 1979 203 154 79 41 499

1061 Famau,
Version B Forged, unfinished, bent, rectangular rope hole /w spike, round eye Craig Kubanoff, 2007 211 153 80 46 559

1140 Fusion Forged, soft anodized Al, lunar holes, belay slot Yi-tien Tuan, 2008 260 171 171 16 455

319 Handley Cool 8, Thin-walled Welded 9.8 mm thin-walled stainless steel tubing, unfinished, irregular holes B&C Wunderwear, 1991 108 158 164 19 492

320 Handley Cool 8, Thick-walled Welded 9.8 mm thick-walled stainless steel tubing, unfinished, irregular holes B&C Wunderwear, 1991 173 126 141 19 338

1007 Hugh Banner Forged, unfinished, side T horns, round rope hole, auxiliary hole, and eye Koen Viaene, 2006 149 123 116 13 181

595 Hugh Banner Safety "8," Version A Forged, unfinished, hexagonal rope hole, sewn 19mm x 3mm attachment sling Cormier Mountaineering, 2001 156 145 108 13 199

1032 Hugh Banner Safety "8," Version B Forged, unfinished, hexagonal rope hole, trapezoidal eye Christopher Wanless, 2007 140 141 109 13 193

564 Interalp/Camp Job, Version A Forged, unfinished Al, Oval rope hole, round eye, irregular slot, four lateral ears Dirk Stoffels, 2000 199 171 100 34 581

1103 Interalp/Camp Job, Version B Forged, unfinished Al, Oval rope hole, round eye, irregular slot, four lateral ears The Outdoor Outpost, 2007 199 174 100 34 581

933 ISC Milled hard anodized, oval rope & lightening holes, lunar eye Marc Savinac, 2003 208 170 147 13 312

1022 Kong Forged stainless steel, dound holes, belay slot Barry Duncan, 2006 446 140 129 16 285

561 Kong Big "8" (805.04) Forged, plated steel, lunar holes, belay slot Inner Mountain Outfitters, 2000 787 171 170 17 494

562 Kong Big "8" (805.05) Forged, unfinished SS, lunar holes, belay slot Inner Mountain Outfitters, 2000 822 171 170 17 494

563 Kong Big "8" (805.06) Forged, soft anodized Al, lunar holes, belay slot Inner Mountain Outfitters, 2000 265 171 170 17 494

1108 Krok 8 Ear Milled, painted, side T horns, round holes PetrenkoWorld, 2007 139 151 99 10 154

1109 Krok Inv Aluminum Milled, painted, side T horns, round holes PetrenkoWorld, 2007 126 132 109 10 149

1110 Krok Inv Steel Welded 10 mm rod, side T horns, subrounded holes PetrenkoWorld, 2007 287 149 108 10 166

1144 Krok SQU-EAR Milled, painted, side T horns, pentagonal rope hole, round eye gear4rocks.com, 2008 115 118 99 9 109

981 Lazy 8 Milled, offset irregular rope hole, oval eye, noncommercial Tom Mayer, 2005 82 104 72 10 74

1097 Mizo Jet Man Big Forged 7071-T5, unfinished, side T horns, round rope hole, auxiliary hole, and eye Mizo, 2007 145 122 116 13 177

1098 Mizo Jet Man Small Forged 7071-T5, unfinished, side T horns, round rope hole, auxiliary hole, and eye Mizo, 2007 105 114 110 10 123

1099 Mizo Jet Man Sus Forged SS, unfinished, side T horns, oval rope hole, round eye Mizo, 2007 467 136 121 14 237

532 Morph 8 Milled, unfinished, asymmetrical, one ear, noncommercial Ben Schwartz, 1997 151 146 65 13 123

952 Morph 8 Prototype Milled, unfinished, asymmetrical, one ear, noncommercial William Shrewsbury, 2004 144 146 67 13 124

322 Munter Egg Mark 3 Cast, unfinished, D rope hole, Rectangular eye, 4 round & 2 arced lightening holes Eiselin Sport, 1982 219 181 124 10 224

583 New England Micro Rappel Device Forged steel, round rope hole, two rectangular eyes Gearshop.com, 2000 150 92 52 10 46

904 Petzl Pirana Forged unfinished Al, asymmetric, three horns Karst Sports, 2001 96 115 76 15 130

1021 PMI Steel Rescue 8 Milled steel, round rope hole, pear eye On Rope 1, 2006 663 170 158 13 344

1114 Quechua Milled Al, irregular rope hole, oval eye, small ear nubs Matthew Collings, 2007 91 122 75 10 92

935 Rappel Rescue Systems Pro-Pak Forged Al, hard anodized, partitioned oval rope hole, round eye, vertical ears, for kevlar webbing. Alan Shelby, 2004 294 191 86 16 255

514 Rappel Wheel, Version A Forged & cut by hand from MS part 22940, soft anodized, 2 ears Para-Gear (blank), 1995 356 150 150 16 360

515 Rappel Wheel, Version B Forged & cut by hand from MS part 22940, soft anodized, 4 ears Para-Gear (blank), 1995 356 150 150 16 360

1132 Rescue Q Milled, hard anodized, round rope hole, subtriangular eye, side ears Mark Hopkins, 2007 239 194 120 13 293

551 Rescue Systems Inc. Forged Steel, oval rope hole, sound eye, short belay slot, asymmetrical On Rope 1, 1999 672 162 149 19 459

326 Rock & Rescue Milled, soft anodized, round rope & lightening holes, lunar eye John E. Weinel, Inc., 1991 231 174 169 13 382

328 Russ Anderson, Version A Milled, soft anodized, round holes ca. 1981 191 159 135 13 279

329 Russ Anderson, Version B Milled, soft anodized, round holes, slot Speleoshoppe, 1982 177 159 135 13 279

334 Russ Anderson, Version C Milled, soft anodized, drooped ears. round rope hole, D eye Bob & Bob, 1987 195 155 133 13 268

335 Russ Anderson, Version D Milled, hard anodized, drooped ears. round rope & lightening hole, D eye Inner Mountain Outfitters, 1989 184 155 133 13 268

336 Russ Anderson, Version E Milled, unfinished, steel, dropped ears, irregular rope hole, quarter circle eye ? 648 180 161 13 377

342 Russian,
Version A Milled, soft anodized, tie-off horns, round holes John E. Weinel, Inc., 1994 140 134 108 12 174

473 Russian,
Version B Milled, unfinished, two separate side horns, round holes John E. Weinel, Inc., 1990 86 98 82 11 88

492 Russian,
Version C Milled, soft anodized, side T horns, round holes John E. Weinel, Inc., early 1990s. 64 85 79 11 74

523 Russian,
Version D Milled, unfinished, pentagonal rope hole, oval eye, two manufacturing holes John E. Weinel, Inc., 1996 111 134 74 12 119

965 Russian,
Version E Milled, soft anodized, side T horns, round holes Ural Sport, 2004 111 135 105 10 139

966 Russian,
Version F Milled(?) steel, painted, side T horns, round holes Ural Sport, 2004 330 147 125 10 184

967 Russian,
Version G Milled, soft anodized, side T horns, round holes Ural Sport, 2004 81 98 85 10 83

968 Russian,
Version H Milled, painted, round rope hole & eye Ural Sport, 2004 79 94 81 10 78

969 Russian,
Version I Milled steel, painted, side T horns, round holes Ural Sport, 2004 297 132 109 10 147

970 Russian,
Version J Forged, painted, side T horns, round holes Ural Sport, 2004 172 153 98 13 193

971 Russian,
Version K Forged, painted, side T horns, oval rope hole, round eye Ural Sport, 2004 189 155 115 15 259

972 Russian copy of Petzl Pirana Milled unfinished Al, asymmetric, three horns Ural Sport, 2004 81 123 77 10 93

586 SBCI Amigo Bailout 8 Milled, soft anodized, pentagonal rope hole, oval eye On Rope 1, 2000 143 120 92 13 142

531 SBCI Banditt Milled, soft anodized, belay slot at top, lunar rope hole & eyes, round lightening hole John E. Weinel, Inc., 1997 321 180 173 13 405

902 SBCI Sidewinder Milled, hard anodized, oval rope hole, long slot eye, side ears Luke's, 2001 290 194 108 13 273

949 Single Rope Technique R8B Milled, hard anodized, Normal & low ears (for longhorning), round holes On Rope, 2004 296 172 92 17 262

570 Single Rope Technique R8Ba Milled, hard anodized, low ears (for longhorning), round holes Single Rope Technique, 2000 281 172 92 16 258

569 Single Rope Technique R8La Milled, hard anodized, truncated circular rope hole, belay slot, D eye Single Rope Technique, 2000 311 176 159 17 462

568 Single Rope Technique R8Sa Milled, hard anodized, oval rope hole, D eye Single Rope Technique, 2000 157 135 119 12 195

585 SMC Personal Escape 8 Milled, soft anodized,triangular rope hole, round eye On Rope 1, 2000 48 72 70 10 49

344 Smith Safety Products, Version A Milled, hard anodized, drooped ears, round rope hole /w inner nubbins, round eye ? 211 168 150 13 328

958 Smith Safety Products, Version B Milled, unfinished, stainless steel, round rope hole & eye N. Lester, 2004 614 166 152 13 320

1040 Smith Safety Products, Version C Milled, chrome plated steel, round rope hole & eye George Stehle, 2007 618 167 155 12 321

1123 Smith Safety Products, Version D Milled, chrome plated steel, round rope hole & eye Chuck Hoffmann, 2007 224 168 154 13 326

343 Spelean Harpoon Forged, unfinished, low ears (for longhorning), round holes Speleoshoppe, 1979 286 168 89 17 254

507 Stubai Milled, hard anodized, blended triangular ears, oval to D top hole, triangular eye Speleoshoppe, 1995 104 114 95 10 108

347 TZ eight Milled, unfinished, stainless steel, Rectangular rope hole, long clip slot B&C Wunderwear, 1993 488 128 88 14 158

1031 Unknown Milled, hard anodized, oval rope hole, belay slot, round eye, side ears eBay, 2007 215 176 100 13 227

916 Ural Alp (20.01) Welded 10-mm steel rod Ural Sport, 2002 252 123 90 10 111

948 Ural Alp (20.03) Welded 10-mm steel rod, painted, crosspiece Ural Sport, 2004 300 123 117 10 144

987 Ural-Alp (20.05) Welded 10-mm steel rod, painted, top post Ural Sport, 2005 289 148 80 10 123

961 Ural-Alp Self-Braking Descender/Belay Device, Version B Two bent Ni-plated Al sheets screwed together, sub-rectangular rope hole, round eye, ears Ural Sport, 2004 88 137 70 27 259

ID	Device	Description	Acquired	Weight	Height	Width	Thickness	Std. volume
1141	Advanced Base Camp	Milled, soft anodized, round rope & lightening holes, lunar eye	Kris Steele, 2008	242	174	171	13	378
936	Aircraft Materials Ltd.	Milled, soft anodized, triangular ears, round top hole and eye	eBay, 2004	231	173	122	13	264
1149	ASR Rescue 8	Milled, soft anodized, subtriangular body, trapezoidal top hole and subtriangular eye	Alan Leach, 2008	273	162	162	13	339
922	Austrialpin Eight Special	Milled, hard anodized, blended triangular ears, oval to D top hole, triangular eye	Barrabés.com, 2003	101	114	95	10	108
1157	Blitz Safety 8	Milled, hard anodized, subhexagonal rope hole, long slot eye, side ears	Tim Nolan, 2008	205	179	101	13	231
552	Blue Water Rescue 8	Forged, hard anodized, oval rope & lightening holes, lunar eye	GearPro, 1999	216	171	149	16	408
925	Calma Antibloc	Forged, soft anodized, twin-bar shank, low ears, round holes	Barrabés.com, 2003	143	151	109	15	242
1158	Climbing Technology Ltd.	Forged, soft anodized Al, lunar rope holes, oval eye, belay slot	We're Not Scared Safety, 2008	246	172	172	16	463
311	CMC Rappel 8	Milled, soft anodized, round rope hole, large vertical oval eye	Bob & Bob, 1990	158	132	140	13	240
309	CMC Rescue 8, Version A	Forged, unfinished, steel, round rope hole, large vertical slot eye	L&S Sporting Goods, 1989	635	168	167	14	393
310	CMC Rescue 8, Version B	Forged, painted, steel, round rope hole, large vertical slot eye	Bob & Bob, 1989	624	168	167	14	393
1027	CMC Survivor 8	Milled, hard anodized, triangular ears, round holes	CMC, 2007	44	73	71	10	51
314	CMI Rescue 8	Forged, hard anodized, oval rope & lightening holes, lunar eye	?	219	167	151	17	429
316	DMM Anka	Forged, unfinished, 90 degree twist	Bob & Bob, 1987	188	142	84	47	561
927	Faders Ballet	Forged, hard anodized, bent, pentagonal rope hole, oval eye, low ears	Barrabés.com, 2003	84	108	80	19	84
317	Famau, Version A	Forged?, unfinished, bent, rectangular rope hole /w spike, round eye	Pathfinder Sports, 1979	203	154	79	41	499
1061	Famau, Version B	Forged, unfinished, bent, rectangular rope hole /w spike, round eye	Craig Kubanoff, 2007	211	153	80	46	559
1140	Fusion	Forged, soft anodized Al, lunar holes, belay slot	Yi-tien Tuan, 2008	260	171	171	16	455
319	Handley Cool 8, Thin-walled	Welded 9.8 mm thin-walled stainless steel tubing, unfinished, irregular holes	B&C Wunderwear, 1991	108	158	164	19	492
320	Handley Cool 8, Thick-walled	Welded 9.8 mm thick-walled stainless steel tubing, unfinished, irregular holes	B&C Wunderwear, 1991	173	126	141	19	338
1007	Hugh Banner	Forged, unfinished, side T horns, round rope hole, auxiliary hole, and eye	Koen Viaene, 2006	149	123	116	13	181
595	Hugh Banner Safety "8," Version A	Forged, unfinished, hexagonal rope hole, sewn 19mm x 3mm attachment sling	Cormier Mountaineering, 2001	156	145	108	13	199
1032	Hugh Banner Safety "8," Version B	Forged, unfinished, hexagonal rope hole, trapezoidal eye	Christopher Wanless, 2007	140	141	109	13	193
564	Interalp/Camp Job, Version A	Forged, unfinished Al, Oval rope hole, round eye, irregular slot, four lateral ears	Dirk Stoffels, 2000	199	171	100	34	581
1103	Interalp/Camp Job, Version B	Forged, unfinished Al, Oval rope hole, round eye, irregular slot, four lateral ears	The Outdoor Outpost, 2007	199	174	100	34	581
933	ISC	Milled hard anodized, oval rope & lightening holes, lunar eye	Marc Savinac, 2003	208	170	147	13	312
1022	Kong	Forged stainless steel, dound holes, belay slot	Barry Duncan, 2006	446	140	129	16	285
561	Kong Big "8" (805.04)	Forged, plated steel, lunar holes, belay slot	Inner Mountain Outfitters, 2000	787	171	170	17	494
562	Kong Big "8" (805.05)	Forged, unfinished SS, lunar holes, belay slot	Inner Mountain Outfitters, 2000	822	171	170	17	494
563	Kong Big "8" (805.06)	Forged, soft anodized Al, lunar holes, belay slot	Inner Mountain Outfitters, 2000	265	171	170	17	494
1108	Krok 8 Ear	Milled, painted, side T horns, round holes	PetrenkoWorld, 2007	139	151	99	10	154
1109	Krok Inv Aluminum	Milled, painted, side T horns, round holes	PetrenkoWorld, 2007	126	132	109	10	149
1110	Krok Inv Steel	Welded 10 mm rod, side T horns, subrounded holes	PetrenkoWorld, 2007	287	149	108	10	166
1144	Krok SQU-EAR	Milled, painted, side T horns, pentagonal rope hole, round eye	gear4rocks.com, 2008	115	118	99	9	109
981	Lazy 8	Milled, offset irregular rope hole, oval eye, noncommercial	Tom Mayer, 2005	82	104	72	10	74
1097	Mizo Jet Man Big	Forged 7071-T5, unfinished, side T horns, round rope hole, auxiliary hole, and eye	Mizo, 2007	145	122	116	13	177
1098	Mizo Jet Man Small	Forged 7071-T5, unfinished, side T horns, round rope hole, auxiliary hole, and eye	Mizo, 2007	105	114	110	10	123
1099	Mizo Jet Man Sus	Forged SS, unfinished, side T horns, oval rope hole, round eye	Mizo, 2007	467	136	121	14	237
532	Morph 8	Milled, unfinished, asymmetrical, one ear, noncommercial	Ben Schwartz, 1997	151	146	65	13	123
952	Morph 8 Prototype	Milled, unfinished, asymmetrical, one ear, noncommercial	William Shrewsbury, 2004	144	146	67	13	124
322	Munter Egg Mark 3	Cast, unfinished, D rope hole, Rectangular eye, 4 round & 2 arced lightening holes	Eiselin Sport, 1982	219	181	124	10	224
583	New England Micro Rappel Device	Forged steel, round rope hole, two rectangular eyes	Gearshop.com, 2000	150	92	52	10	46
904	Petzl Pirana	Forged unfinished Al, asymmetric, three horns	Karst Sports, 2001	96	115	76	15	130
1021	PMI Steel Rescue 8	Milled steel, round rope hole, pear eye	On Rope 1, 2006	663	170	158	13	344
1114	Quechua	Milled Al, irregular rope hole, oval eye, small ear nubs	Matthew Collings, 2007	91	122	75	10	92
935	Rappel Rescue Systems Pro-Pak	Forged Al, hard anodized, partitioned oval rope hole, round eye, vertical ears, for kevlar webbing.	Alan Shelby, 2004	294	191	86	16	255
514	Rappel Wheel, Version A	Forged & cut by hand from MS part 22940, soft anodized, 2 ears	Para-Gear (blank), 1995	356	150	150	16	360
515	Rappel Wheel, Version B	Forged & cut by hand from MS part 22940, soft anodized, 4 ears	Para-Gear (blank), 1995	356	150	150	16	360
1132	Rescue Q	Milled, hard anodized, round rope hole, subtriangular eye, side ears	Mark Hopkins, 2007	239	194	120	13	293
551	Rescue Systems Inc.	Forged Steel, oval rope hole, sound eye, short belay slot, asymmetrical	On Rope 1, 1999	672	162	149	19	459
326	Rock & Rescue	Milled, soft anodized, round rope & lightening holes, lunar eye	John E. Weinel, Inc., 1991	231	174	169	13	382
328	Russ Anderson, Version A	Milled, soft anodized, round holes	ca. 1981	191	159	135	13	279
329	Russ Anderson, Version B	Milled, soft anodized, round holes, slot	Speleoshoppe, 1982	177	159	135	13	279
334	Russ Anderson, Version C	Milled, soft anodized, drooped ears. round rope hole, D eye	Bob & Bob, 1987	195	155	133	13	268
335	Russ Anderson, Version D	Milled, hard anodized, drooped ears. round rope & lightening hole, D eye	Inner Mountain Outfitters, 1989	184	155	133	13	268
336	Russ Anderson, Version E	Milled, unfinished, steel, dropped ears, irregular rope hole, quarter circle eye	?	648	180	161	13	377
342	Russian, Version A	Milled, soft anodized, tie-off horns, round holes	John E. Weinel, Inc., 1994	140	134	108	12	174
473	Russian, Version B	Milled, unfinished, two separate side horns, round holes	John E. Weinel, Inc., 1990	86	98	82	11	88
492	Russian, Version C	Milled, soft anodized, side T horns, round holes	John E. Weinel, Inc., early 1990s.	64	85	79	11	74
523	Russian, Version D	Milled, unfinished, pentagonal rope hole, oval eye, two manufacturing holes	John E. Weinel, Inc., 1996	111	134	74	12	119
965	Russian, Version E	Milled, soft anodized, side T horns, round holes	Ural Sport, 2004	111	135	105	10	139
966	Russian, Version F	Milled(?) steel, painted, side T horns, round holes	Ural Sport, 2004	330	147	125	10	184
967	Russian, Version G	Milled, soft anodized, side T horns, round holes	Ural Sport, 2004	81	98	85	10	83
968	Russian, Version H	Milled, painted, round rope hole & eye	Ural Sport, 2004	79	94	81	10	78
969	Russian, Version I	Milled steel, painted, side T horns, round holes	Ural Sport, 2004	297	132	109	10	147
970	Russian, Version J	Forged, painted, side T horns, round holes	Ural Sport, 2004	172	153	98	13	193
971	Russian, Version K	Forged, painted, side T horns, oval rope hole, round eye	Ural Sport, 2004	189	155	115	15	259
972	Russian copy of Petzl Pirana	Milled unfinished Al, asymmetric, three horns	Ural Sport, 2004	81	123	77	10	93
586	SBCI Amigo Bailout 8	Milled, soft anodized, pentagonal rope hole, oval eye	On Rope 1, 2000	143	120	92	13	142
531	SBCI Banditt	Milled, soft anodized, belay slot at top, lunar rope hole & eyes, round lightening hole	John E. Weinel, Inc., 1997	321	180	173	13	405
902	SBCI Sidewinder	Milled, hard anodized, oval rope hole, long slot eye, side ears	Luke's, 2001	290	194	108	13	273
949	Single Rope Technique R8B	Milled, hard anodized, Normal & low ears (for longhorning), round holes	On Rope, 2004	296	172	92	17	262
570	Single Rope Technique R8Ba	Milled, hard anodized, low ears (for longhorning), round holes	Single Rope Technique, 2000	281	172	92	16	258
569	Single Rope Technique R8La	Milled, hard anodized, truncated circular rope hole, belay slot, D eye	Single Rope Technique, 2000	311	176	159	17	462
568	Single Rope Technique R8Sa	Milled, hard anodized, oval rope hole, D eye	Single Rope Technique, 2000	157	135	119	12	195
585	SMC Personal Escape 8	Milled, soft anodized,triangular rope hole, round eye	On Rope 1, 2000	48	72	70	10	49
344	Smith Safety Products, Version A	Milled, hard anodized, drooped ears, round rope hole /w inner nubbins, round eye	?	211	168	150	13	328
958	Smith Safety Products, Version B	Milled, unfinished, stainless steel, round rope hole & eye	N. Lester, 2004	614	166	152	13	320
1040	Smith Safety Products, Version C	Milled, chrome plated steel, round rope hole & eye	George Stehle, 2007	618	167	155	12	321
1123	Smith Safety Products, Version D	Milled, chrome plated steel, round rope hole & eye	Chuck Hoffmann, 2007	224	168	154	13	326
343	Spelean Harpoon	Forged, unfinished, low ears (for longhorning), round holes	Speleoshoppe, 1979	286	168	89	17	254
507	Stubai	Milled, hard anodized, blended triangular ears, oval to D top hole, triangular eye	Speleoshoppe, 1995	104	114	95	10	108
347	TZ eight	Milled, unfinished, stainless steel, Rectangular rope hole, long clip slot	B&C Wunderwear, 1993	488	128	88	14	158
1031	Unknown	Milled, hard anodized, oval rope hole, belay slot, round eye, side ears	eBay, 2007	215	176	100	13	227
916	Ural Alp (20.01)	Welded 10-mm steel rod	Ural Sport, 2002	252	123	90	10	111
948	Ural Alp (20.03)	Welded 10-mm steel rod, painted, crosspiece	Ural Sport, 2004	300	123	117	10	144
987	Ural-Alp (20.05)	Welded 10-mm steel rod, painted, top post	Ural Sport, 2005	289	148	80	10	123
961	Ural-Alp Self-Braking Descender/Belay Device, Version B	Two bent Ni-plated Al sheets screwed together, sub-rectangular rope hole, round eye, ears	Ural Sport, 2004	88	137	70	27	259