The Lisle Clutch Aligning Tool - 55500 is designed to help quickly and accurately align the pilot bearing, clutch disc and pressure plate prior to installation. It features a precision machined steel shaft with a 3/8 and 1/2 square drive and a thrust bearing to keep the tool properly aligned. The tool also includes a 5/8 and 3/4 pilot bearing adapter and a universal clutch alignment sleeve.