The MINI TRAXION has three distinct modes of operation, pulley, progress capture pulley, ascender, making it the ideal companion for extended vertical adventures. Use it for hauling light loads, ascending a rope & self-rescue. The Petzl Mini Traxion is a self jamming pulley that is lightweight & compact. It has an aluminum sheave mounted on a self-lubricating bearing that works even on dirty or icy ropes. It can also be used to ascend a rope & can be locked into position as a pulley, for use on ropes between 8 & 13 mm in diameter. Efficient & compact: aluminum sheave mounted on self-lubricating bushings Trigger cam with teeth & cleaning slot works even on dirty or icy ropes Cam can be locked in open position so device can be used as a simple pulley Can be used to ascend a rope For use on ropes between 8 & 13 mm in diameter