The Depth Stop works with an integral clutch that maintains the preset depth. This means the screw depth isn't controlled by a torque control, so all screws will be set to the same depth. With the Quick-out ring, screws can be removed with the flick of a wrist. Bit changes are fast and easy. The Depth Stop can be used with all Festool cordless drills and fits perfect into the FastFix chuck family.