Petzl pulley with fixed side-pieces. Strong, lightweight and compact standard pulley. Fixed side plates allow quick installation and coupling with a rope clamp Designed for hauling systems and deviations Sheave mounted on self-lubricating bushings for good efficiency For use with OK or WILLIAM type carabiner Technical Features Rope compatibility: 7 to 13 mm Sheave diameter: 21 mm Ball bearings: no Efficiency: 71 % Maximum working load: 2,5 kN x 2 = 5 kN Certification(s): CE EN 12278, UKCA Weight 90 g