Ultra light (72g), multi-purpose belay/rappel device, with range of friction adapted to different rope. Made from hot-forged aluminum * For use on single ropes (? 8,9 mm), half and twin ropes (? 7,5 mm) * V-shaped friction channels: increased friction on thin ropes; Friction is adapted for larger diameter ropes, Increased holding power in Reverso mode * Asymmetrically grooved sidewalls. Increased braking power during a leader or top rope fall or while rappelling. Rope smoothly slides through device when taking up slack * Rope friendly: will not kink the ropes regardless of the mode used; Separates the two strands of rope when belaying and rappelling