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 systemIt uses a long, comfortable handle and a fine thread for the leverage needed to remove tight crank armsUnique rotating tip design has been updated over the CCP-4 and ensures even smoother operation and longer lifeNote: The CCP-44 will not work on crank arms that fit standard square, tapered bottom bracket spindles