This is the Park Tool CCP-22 Crank Puller for Square Taper Cranks. The CCP-22 uses a long comfortable handle and extra fine thread that provides the needed leverage to remove even the tightest cranks. Features: Fits all cranks using 22mm x 1 threads and square, tapered bottom bracket spindles Also fits "Power Spline" cranks from SRAM using the 8mm thread bolt Strong rotating tip system ensures smooth operation and long life.