The MICRO TRAXION is an ultra-light (85 g), ultra-compact progress-capture pulley that is exceptionally efficient (91 %) thanks to its sealed ball bearings. The cam works on dirty or icy ropes and can be locked in open position for use as a pulley. Diagrams for rope installation engraved on interior of pulley. Designed for crevasse rescue, hauling, self-rescue and can be used as emergency ascender.