Description Fast and easy loading, the Black Diamond Super 8 belay/rappel device uses a unique design that eliminates excess material by thinning out the non-rope bearing areas. Sold in assorted colors. Features Modern 8 design for smooth handling Ideal for the retro climber or Search and Rescue professional Works well with double 8.1 mm ropes up to 11 mm single lines Specs Weight :  87 g (3.1 oz) Strength :  15 kN (3372 lbf)