These adjustable handles act as a standard clamping lever, yet can adjust to 16-26 positions depending on the size. Pulling up on the handle disengages it, while the insert or stud remains stationary, allowing you to adjust the handle to the desired position. Releasing the handle reengages it for tightening and loosening. Allows for convenient positioning for maximum leverage, as well as saving space and keeping the handle out of the way. Insert, stud and other components are made of steel.