100% brand new and high quality Material: HSS 4241 Black chamfer made is 45 steel Color: as shown in pic Hex Shank Wood Countersink Drill Bit 5pcs/set with 1 Hex Shank Shank: 1/4 hexagonal shank. Hexagonal shank diameter of 6.35mm Role: can simultaneously drilled screw holes and sink holes receiving a screw cap and held both on the same axis, tighten the screw after the screw cap is located below the plane of the board! Suitable for drilling with chuck or mechanical joints for drilling in hard wood and wooden floor HSS 4241 (applies to the under 25HRC hardness artifacts, such as carbon steel, a thin iron plate, insulating plate, PVC board, wood, etc.). Black chamfer made is 45 steel 　 Specification: Chamfer: Drill 4#: 2.1mm 6#: 2.38mm 8#: 2.78mm 10#: 3.175mm 12#: 3.56mm

• High Strength Steel

High Strength SteelP2L