Highly efficient double Prusik pulley (Efficiency: 97 %). Special side plates designed for use with a Prusik friction hitch in progress capture systems. Parallel mounted sheaves (diameter 51 mm) and auxiliary attachment point for creating different types of hauling systems, including the most complex. Large diameter sheaves mounted on sealed ball bearings for excellent efficiency. Accepts up to 3 carabiners to facilitate use. For use on ropes between 7 and 13 mm in diameter. Working load: 2 x 3 kN x 2 = 12 kN. Weight: 450 g. Certification: CE EN 12278, NFPA 1983 General Use.