I acquired my Petzl Freino from Inner Mountain Outfitters in 2004. The Petzl Freino is 102 mm. tall, 79 mm. wide, and 17 mm. thick. Mine weighs 84 g.
Petzl developed the Freino as a credible alternative to the second seat carabiner recommended for bobbin users. The Freino is essentially a double carabiner. The main (locking) carabiner attaches the bobbin to the seat maillon while the trailing end of the rope passes through the subsidiary (wire-gate) side. Although the Freino eliminates the need for one carabiner, the subsidiary side is not large enough to pass the bights needed for locking a bobbin off in the standard manner.