Designed for Tyrolean traverses on cable or rope. Maximum allowable speed: 10 m/s * Stainless steel sheaves for excellent durability. Sheaves mounted on self-lubricating bushings for good efficiency * Accepts up to three carabiners to facilitate use * CE / UIAA certified. Efficiency: 71%. Breaking strength: 24 kN. Working load: 10 kN. Sheave: 21mm, self-lubricating bushings * For use on cable (maximum diameter of 12 mm) & on rope (maximum diameter of 13 mm) Weight 9.1 oz (258g)