Features an adjustable, heavy-duty, revolving depth-stop with a strong thrust ball bearing for quick and easy adjustment of the countersink depth without scratching or burning surfaces. The user friendly design enables control of the drill length and its replacement, without need to disassemble the depth-stop. Users can adjust the depth of both the pilot hole and countersink so that the resulting opening is either flush with the surface or recessed. The resulting countersinks can be shallow to accommodate a screw only or deeper to allow for insertion of a plug. The countersink also features an opening to allow for chip evacuation in materials including hardwood, plywood, decking material, solid surface and softwoods.