The light weight and compact size of the Micro PMPs make them ideal for weight conscious trekking, remote rescue or confined space use, especially when reliability, performance and function are important. The wide base design maximizes the effectiveness of a prusik hitch while a unique sideplate formation allows the use of larger ropes in a compact pulley. An oversized bell-shaped top hole accepts 2 large rescue carabiners or multiple small carabiners and allows the carabiners to be rotated freely and completely even while closed. Solid sideplates help prevent foreign object access and reduce snagging. High efficiency sealed ball bearing reduces performance loss in large systems. NFPA Certified 2001. Weight: 3.7 oz (107g). Dimensions: 3.75" x 2.55" x 1.12". Sheave: 1-3/8" x 1/2". Material: Aluminum Sideplates & Sheave, Ball Bearings. Strength: 4,945 lbs - 22kN (1 KN = 225lbs.). Rope Size: Up to 12.5mm or 1/2". Meets NFPA "L" - Light Use