12Pcs HSS Titanium M3 - M10 Combination Hex Deburr Countersink Tap Drill Bit Set

High hardness rustproof solid and durable. The advantage is opening tapping chamfering;Self-centering point do not need assistant center drilling or center punching. Suitable for drilling tapping cutting on soft metal aluminum plate iron etc. Drilling and tapping in one one-step processing greatly save processing steps and time costs improve working efficiency. HSS6542 (M2) is of higher hardness and more durable than the HSS4341 and is suitable for cutting the steel even the 2mm 304 steel. Color: Golden Type: Tap Drill Bit DIY Supplies: Metalworking Material: HSS+Titanium : 1/4 inch (6.35mm) hex Surface treatment:Titanium Coated Size: M3x0.5 ; M4x0.7; M5x0.8 ; M6x1 ; M8x1.25 ; M10x1.5 Suitable For: Iron cast iron steel carbon steel You can save processing steps and time costs improve efficiency Its a spiral groove within the processing thread cutting up to exclude and was curled applied internally threaded through holes Wear and long life Packing Included : 12 x Hex Tap Drill Bits Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.