A highly durable metal tool to remove and install Shimano HollowTech II integrated Bottom brackets and chainsets16 Laser cut splines securely engage the notches of the bottom bracket cups, while the other end fits the 8 internal splines of the crank arm adjustment capPlastic coated handle for a secure and comfortable gripWarning: this tool has a long handle and it is possible to damage the tool or the component by over-tightening during installationRecommended torque setting for bottom bracket cups: 35 - 50 NmRecommended torque setting for crank arm adjustment cap: 0.4 - 0.7 Nm