Designed to simplify the process of removing and installing Shimano® direct-mount chainring lockrings, this tool is a must-have for any bike mechanic or enthusiastEngineered to fit snugly onto the lockring, providing a secure grip and allowing for easy removal and installationFits 16 notch, 41mm outside diameter lockrings for the following Shimano direct-mount chainring lockrings systems: XTR 9100, XT8120, MT900 and various othersLockring ToolRed16-Notch41mmXTR-CNK-SOCKETShimanoUPC/EAN/GTIN: 811079029959