Designed to remove and install the adjusting caps on Shimano Hollowtech II crank/bottom bracket systemsMade from investment cast steel, provides strength needed to remove seized caps and includes option to use with 8mm hex wrench for added leverageBuilt in hook allows tool to be used to lift the safety plate on the non-drive side of the crank assemblyBottom Bracket WrenchHollowtech IIBBT-10.2Shimano8mm HexUPC/EAN/GTIN: 763477000460