ITEM NAME:4x /Set Straight Shank Three-point Woodworking Countersink Drill Bit s KZY Descriptio n Material: 45# carbon steel Color: solid color Size: 3-6MM Shank type: straight shank Surface treatment: natural color grinding five-blade chamfering positioning + black and white woodworking drill Advantages: During the use of the five-blade chamfering machine, the wood chips can be discharged more quickly, and the smooth and flat counterbore can be drilled at one time, and the screw cap is embedded in the surface of the workpiece. Packing: 4PCS three-point woodworking countersink We offer you what you need! 4PCS Flute Countersink Drill Bit Set Reamer Woodworking Chamfer Home Tools.Natural color grinding five-blade chamfering positioning + black and white woodworking drill. Shank type: straight shank. We'd like to settle any problem in a friendly manner. Material: 45# carbon steel.