Climbing Technology RollNLock Ascender and Rescue ToolAll sales of climbing equipment are final and cannot be returned or exchanged. Ultra light pulley and rope clamp designed for work, rope climbing maneuvers, rescue and self rescue situations. Main technical features include moving side plates for easy rope entry, spring operated cam for use as a rope ascender, and a sliding lock for use as a pulley. Ideal for crevasse rescue and hauling light loads. Developed to work on wet or dirty ropes and can be