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 5 D20 75 150 3T

5 D20 75  150  3T 20R0

and in severe cases

Heat resistant

铝合金 / 不锈钢

显著降低切削振动

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 5 D20 75 150 3TBB 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