Tubers

Tubers predate belay tubes, but function nearly as well. The rope runs smoothly, they dissipate heat, they wear well, they are small, and they don't cost very much. Most of my tubers have external ribs to improve heat transfer to the air without adding excessive weight. Still, these are belay devices, not long drop rappel devices.

I use the following criteria to decide whether to call something a Tuber:

The devices that I placed in this category have one main rope channel that is split into two halves by a rod.
The rod splitting the rope channel also forms an attachment for the keeper.

Although most of my tubers have external ribs, I do not use this as a deciding criteria, so the Simond Cubiks are tubers. The examples that I use for comparison when I consider placing a device into this category are the Latok Tuber and the Lowe Tuber.

ID	Device	Description	Acquired	Weight	Length	Width	Height	Std. volume
701	Advanced Base Camp Decelerator	Forged Al, hard anodized, square, cable keeper	Inner Mountain Outfitters, 1996	76	85	49	86	359
840	Koola (Florsheim)	Milled Al, hard anodized, round, pivoting rod keeper	Florsheim Consultants, 2006	85	74	57	96	405
787	Koola (Megagrip)	Milled Al, unfinished, round, pivoting rod keeper	Ian MacNab, 2003	76	68	55	108	407
612	Latok Tuber	Milled & forged Al, unfinished, round, cable keeper	L.L. Bean, 1987	53	78	49	72	276
1623	Lowe Square Tuber	Milled & forged Al, unfinished, square, cable keeper	Rose Gonos, 2009	61	56	52	113	324
664	Lowe Tuber, Version A	Milled & forged Al, soft anodized, round, cord keeper	Ragged Mountain Equipment, 1994	49	50	50	38	94
1612	Lowe Tuber, Version B	Milled & forged Al, soft anodized, round, cable keeper	Tim Spencer, 2008	58	80	50	72	286
613	Lowe Tuber II, Version A	Milled & forged Al, soft anodized, round, cord keeper	Ragged Mountain Equipment, 1994	61	55	55	38	112
1625	Lowe Tuber II, Version B	Milled & forged Al, soft anodized, round,plastic-covered cable keeper	Thomas Kopp, 2009	63	65	55	38	134
724	Simond Cubik, Version A	Forged Al, unfinished, V grooves, cable keeper	Climb Max, 1999	72	60	50	117	350
853	Simond Cubik, Version B	Forged Al, painted, V grooves, cable keeper	Barrabés.com, 2007	73	60	50	108	322
673	Trango Pyramid, Version A	Milled & forged Al, hard anodized, square, cable keeper	Exkursion, 1994	66	84	51	92	393
1633	Trango Pyramid, Version B	Milled & forged Al, unfinished, square, cable keeper	Zachary Britner, 2009	66	57	50	97	279
1645	Trango Pyramid, Version C	Milled & forged Al, hard anodized, square, cable keeper	Thomas Carlsen, 2009	81	87	50	96	415
1624	Unknown Tuber	Milled & forged Al, soft anodized, round, plastic-covered cable keeper	Vic Clementi, 2009	50	50	20	37	37