Professional countersink bits with no thrust bal for clean woodworking holesAn 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.<br> 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.<br> Adjustable Depth-Stop: Features a heavy-duty, adjustable, revolving depth-stop with a strong thrust ball bearing for quick and easy adjustments. Efficient Design: Designed with an open space for chip evacuation and enables users to drill a pilot hole and tapered countersink in one step.<br> Specification Detail<br> Cutting Angle 82 Degrees<br> (A°) Angle 49°<br> (B) Cutting Height 3/64 inch-3/8 inch<br> (D) Diameter 3/8 inch<br> (D) Shank 1/4 inch Hex Shank<br> (L) Overall Length 2 inch-5/8 inch<br> Colour:As shown<br> Material:Metal<br> Due to different product batches, the appearance may vary, which does not affect the use<br> Package Contents:<br> 1 set x Countersink Drill<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.