Petzl Gemini P66A Lightweight Swing Cheek Prussik Double Pulley with 25mm dia. alloy sheaves. Colour yellow. This compact lightweight pulley is suitable either as a component of a hauling system or for use with a Prussik hitch as a progress capture device, the side plate profile allows the knot to be released when it comes against the pulley. For use with textile ropes between 7mm & 11mm dia. Sealed ball bearings for high efficiency. Weight 135g. EN12278 & NFPA 1983 L Light Use (2006 ED.). Individually tested. Unique serial number on each unit. WLL 1.5kN x 4 = 6kN. MBL 5.75kN x 4 = 23kN.