Designed to give the best control on the torque of bearing pack for checking bearing end play. Torque nut with JIMS tool ZPN 235848 for consistent professional results. The basic sprocket shaft tool works on all Big Twin engines from 1955 thru 1999 and 1999 thru 2005 Twin Cam. To use this tool on 2006 thru 2017 Twin Cams you will also need the ZPN 753619 upgrade kit. Use with ZPN 233199 to install the sprocket shaft oil seal.