Features:
1. High hardness, rustproof, solid and durable.
2. The advantage is opening, tapping, chamfering.
3. Self-centering point, do not need assistant center drilling or center punching.
4. Drilling and tapping in one, one-step processing, greatly save processing steps and time costs, improve working efficiency.Save processing steps and time costs, improve efficiency.
5. Spiral groove, within the processing thread, cutting up to exclude, and was curled applied internally threaded through holes.
Specification:
Material: High-speed steel ( HSS 4341 )
Color: Gold
Metric: M3x0.5, M4x0.7, M5x0.8, M6x1, M8x1.25, M10x1.5
Shank: 1/4"(6.35mm) hex shank
Size: M3, M4, M5, M6, M8, M10
Center punch material: iron, high-speed steel punch head
Usage: Suitable for drilling, tapping, cutting on soft metal, aluminum plate, iron, etc.
Package include:
6 x Compound Tap Drill Bits
Caution:
When you use this drill bits, the material temperature will get very high, please add some water or coolant to avoid the material get smoke when using it.