Tree climbing requires a lot of moving around while on rope, which usually means a lot of twisting. If you're like a lot of climbers, the worst time to untwist your line comes when you are in the most precarious positions and although rarely life threatening it certainly can be inconvenient. Rock Exotica developed this precision swivel to relieve just such twisting. You'll really appreciate the smooth swivel action of sealed ball bearings inside the forged alloy body, for years to come.