Here’s a better way to make a coMMon job faster and easier. This tool allows easy re-setting of the cam chain tensioner mechanism on the Yamaha R-1. The threaded C-Clamp design lets you gradually compress the unit, making re-installation of the tensioner easier. A rubber pad at the receiving end of the tool prevents marring or scratches, while the body of the tool includes a convienient tab that makes it possible to mount it in a bench vice For hands free operation