DingGreat 6Pcs HSS Center Drill Bits Set, 1/1.5/2/2.5/3/5mm 60 Degree Lathe Mill Combined Centre Countersink Bit Suitable for Positioning and Chamfering Processing

Material: HSS. These center drills got quick cutting speed, and good chip removal. Size: 1.0mm, 1.5mm, 2mm, 2.5mm, 3mm, 5mm. Feature: each bit has a double end can be used and grinding at a standard 60 degree Angle. Suitable for: Bodhi jewelry, Ordinary Steel, metal, Iron, Copper, Aluminum, Wood, Plastic Etc. Function: Used for precise positioning prefabricated in hole processing and guide the twist drill for hole machining to reduce errors.