Material: The pre-drill with countersunk head is made of high-quality alloy, which has excellent cutting performance, high durability and good wear resistance. Evacuation: Countersunk wood spiral flutes quickly evacuate chips from the hole. It effectively prevents the accumulation of dirt residues. MULTI-PURPOSE: for home or professional woodworking projects, it is suitable for drilling countersink holes in soft materials such as wood, aluminum, plywood, plastic, PVC boards, etc. Not recommended for metal or sheet steel. Adjustable: Drill countersink with depth stopper, no penetration, improve work efficiency, adjust the length of the countersink to adjust the drilling length for different screw lengths. Wide Application: This countersink drill is suitable for hand drills, bench drills and electric drills. The companion for woodworking enthusiasts. Size: 8 x 1cm Material: YG8 tungsten steel alloy colour: As shown White plastic bag or paper box sent randomly, Not accepting designation Package Contents: 4 x limit countersunk drill Only the above package content, other products are not included. 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.