Designed and built to remove and install the direct mount lockring that retains front chainrings found on some Specialized, Cannondale and FSA modular cranksFor lockrings with 47-48mm outside diameter and 4 or 8 notchesFits both 4 notch (FSA and Cannondale) and 8 notch (Specialized) lockrings36mm hex drive to be used with Park Tool TWB-36 Crow Foot and a torque wrench to properly measure torqueConstructed of 4140 heat treated steel and plated for long lifeLockring ToolBlackLRT-3UPC/EAN/GTIN: 763477006899