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 & can be locked in open position for use as a pulley. Ultra-light & ultra-compact progress capture pulley (volume & weight 50 % smaller than the MINI TRAXION) Excellent efficiency, thanks to sealed ball bearings (91 %) Cam can be locked in open position so device can be used as a simple pulley. Works even on frozen or muddy ropes. For use on ropes between 8 & 11 mm in diameter Diagrams for rope installation engraved on interior of pulley Designed for crevasse rescue, hauling, self-rescue & can be used as emergency ascender