3PCS, SPIRAL STEP DRILL SET HSS TIN (4,4,6) PROLINE
- Designed for metal, steel metal sheets, plastics
- Hole edges remain clean and burr-free
- The drill does not slide on oval surfaces
- Self-centring on rounded and slippery surfaces. Rapid heat dissipation when drilling in hard materials
- Made from 4241 HSS , coated with titanium nitride
- Roller shank
- 77800 – 4, 6, 8, 10, 12
- 77801- 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30
- 77802- 6, 8, 13, 16, 19, 21, 23, 26, 29, 32, 35, 38
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