Specifically designed to remove crank arms from Shimano OCTALINK and ISIS Drive splined bottom bracket spindles that do not use a "One Key Release" system. The CCP-44 uses a long, comfortable handle and a fine thread for the leverage needed to remove tight crank arms. Unique rotating tip ensures smooth operation and long life. Note: The CCP-44 will not work on crank arms that fit square, tapered bottom bracket spindles.