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. It also has an open space to allow for chip evacuation. The user friendly design enables control of the drill length and its replacement, without the need to disassemble the depth-stop. Enables users to drill a pilot hole and tapered Countersink in one step. The adjustable depth-stop and independent stop Collar prevent marking of the workpiece and perfect Countersink depth control, #55242, A angle 49, B Cutting height 364-38, D diameter 12, D shank 14, overall length L 2-34, drill DIN 1897, wood screw size 10, D1 316, replacement drill 630-236, replacement Countersink 55276, use with plug Cutter optional 55222, 55242 carbide Tipped 82 degree Countersink with adjustable depth stop and no-thrust ball bearing, 12 dia x 316 drill DIA x 14 inch quick release hex shank