The Cinch is the latest in a long line of innovative belay devices introduced by Trango We designed it with an eye for function, aesthetics, and simplicity (it?s about as complicated as a door hinge) * On smaller diameter ropes, or when holding falls that generate extremely high loads (in excess of factor 1) the Cinch acts dynamically, reducing shock loads to the belay system * Optimum rope size is 94 - 11mm so it offers up a secure belay and lower on a wide range of single ropes In addition, it will release easily and modulate fluidly while you?re rappelling or lowering off * 182g The Cinch feeds rope easier than any other device, fits nicely in your hand, and weighs 182gm For use on CE/UIAA dynamic climbing ropes only * Recommended Single Rope Diameter: 94 - 11mm, Do not use with half or twin ropes