The CCP-4 Crank Puller is specifically designed to remove crank arms from splined Shimano Octalink and ISIS Drive bottom bracket spindles that do not use a One Key Release system. It uses a long, comfortable handle and a fine thread for the leverage needed to remove tight crank arms. Now with a stronger rotating tip system to ensure smooth operation and long life. Note-The CCP-4 will not work on crank arms that fit standard square, tapered bottom bracket spindles