HI-US 6pcs Self-centering Spiral Pointed Tap HSS Tapping Thread Hex Tap Drill Bit

6pcs Self-centering Spiral Pointed Taps HSS Tapping Thread Forming 1/4 Inch Hex Tap Drill Bits Fluted Machine Screw Tap Kit M3-M10 Feature: High hardness anti-rust strong and durable. The advantages are opening tapping and chamfering. Self-centering no need for auxiliary center drilling or center punching. Suitable for drilling tapping and cutting on soft metals aluminum plates iron etc. One-click drilling and tapping greatly saves processing steps and time costs and improves work efficiency. Specification: Material: HSS Shank: 1/4 inch (6.35 mm) hexagonal handle Size: Tap diameter M3*0.5 M4*0.7 M5*0.8 M61.0 M8*1.25 M10*1.5. Length: about 55-58mm/2.17-2.28 Quantity: 6 Included: 6 X Hex Tap Drill Bits