The CCP-4 Crank Puller is specifically designed to remove crank arms from splined Shimano Octalink & ISIS Drive bottom bracket spindles that do not use a One Key Release system It uses a long comfortable handle & a fine thread for the leverage needed to remove tight crank arms Unique rotating tip design has been updated over the CCP-4 & ensures even smoother operation & longer life Note: The CCP-44 will not work on crank arms that fit standard square tapered bottom bracket spindles