BB Tap Drill Bit Combination TiN HSS Carbide ISO H2 Metric Machine Hand Thread Drilling Tool Hex Square Shank Set for Metal Wood Color:Hex-6PCS -Special coating treatment on the

-Special coating treatment on the surface reduces cutting resistance

5 D20 75  150  3T 20R0

显著降低切削振动

Precision-Ground Cutting Edges with No Burrs

BB Tap Drill Bit Combination TiN HSS Carbide ISO H2 Metric Machine Hand Thread Drilling Tool Hex Square Shank Set for Metal Wood Color:Hex-6PCS -Special coating treatment on theBB Tap drill10pcs HSS43 For soft materials, non metallic processing, blue coating increases the wear resistance HSS65 For steel, copper, aluminum and other metals, hardness less than HRC20 Carbide High Hardness Suitable for stabilizing equipment, tapping machines, CNC, etc No Manual, No hand use One Tap Does the Job of Three Efficient and Cost Saving with drilling and tapping integrated for higher efficiency Combined Tap DrillDrilling and tapping in