PETZL Mini Traxion Pulley Sheave with self-lubricating bushings is efficient and compact Chrome-plated steel cam has inclined teeth and self-cleaning slots to provide grip on wet, icy or muddy ropes Efficiently replaces the traditional pulley system set-up: pulley + carabiner + rope clamp / grab Also works well for Tyrolean traverses and for ascending rope For use with ropes from 8 to 13 mm