Required to allow the application of high torque for loosening and tightening the crank pulley fixings without disturbing the crank position. Designed to remove and install the crankshaft pulley on Subaru Imprezas. Suitable for Subaru BJ engines. Crankshaft Pulley/Installer comes with 4 pins positioned at 55mm on a cranked handle. Extra long 770mm for leverage. Equivalent to OEM 499977000.