Climbing Technology Quick Roll Innovative ascender handle with integrated pulley. Much more effective and less clumsy than the traditional ascending handles with their additional connector: the working rope runs from the descender over the integrated pulley , thus reducing friction and facilitating the ascent. Cam opening lever usable with one hand, with a single downwards movement Wear-resistant steel blocking cam, with depressions to avoid the accumulation of dirt and mud and reduce force needed to slide device up the rope in difficult conditions (muddy, iced-up ropes); 2 additional attachment points, system to prevent cam inverting and secondary hole for connecting an etrier with a quick link. Great for Open Ascent Event for a quick connect to weight your line. Rope diameter: 10 – 13 mm Weight: 0.2 lbs