Highly efficient Prusik pulley Special side plates designed for use with a Prusik friction hitch in progress capture systems Large diameter sheave mounted on sealed ball bearings for excellent efficiency Accepts up to three carabiners to facilitate use Specifications: For use on ropes between 7 and 13 mm in diameter Sheave: 51 mm Efficiency: 97 % Working load: 4 kN x 2 = 8 kN 295 g CERTIFICATION: CE EN 12278, NFPA 1983 General Use Item Number: P60A