
Cemented Carbide: Constructed with cemented carbide for long-lasting durability, the high-speed steel drill bit drills overlapping, angled and pocket holes in all types of wood, easy to drilling hinge hole and cabinet fixing. X-wing Design for Precision: The center spur of each bit ensures precise drilling and prevents walking and wobbling during operation, creating perfectly round and accurate holes with the center spur design. Countersink Kit: φ30mm / 40mm / 45mm / 50mm / 60mm bit size, can be used to drill large and small hole, maximum hole depth is 50mm, small resistance to incision, improve opening speed, easy chip and no shaking. Professional Tool Sets: Guided by the circular rim, bore all arcs of circle in any direction; ensures true, accurate and clean flat bottom hole with fast waste removal and ensure your work efficiently. Drilling Cutting Holes: Suitable for drill press, pistol drill, drill press and mobile band magnetism drill for mounting the ball point of the door,