- Streamlined Size Transition - Guarantees true smooth drilling of large holes.
- Titanium aluminum nitride Coating- 89HRC surface hardness, harder materials cut with higher cutting speeds.
- HSS Step Drill - Ideal drilling for Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets.
- Dimension - Includes 15 STEPS SIZE from 1/4" to 2-1/2"; traditional hole saw set has been replaced .
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