The latest belay/rappel device from Petzl, its ultra light with a range of friction adapting to different rope sizes. The V-shaped channel grooves are asymmetric to regulate the amount of braking friction on the rope depending on its diameter.- Weight: 57g*Can be used with:*- Single Ropes >8,9mm, Half Ropes >8,0mm & Twin Ropes >7,5mm Petzl Verso