3 Flute, 3 Spiral Groove Design
Great chip removal, great heat dissipation, higher drilling speed, small vibration, higher stability, make drilling high accuracy.
1/4 Inch Hex Shank Design
More than 4241and 6542 high-speed steel materials
Name:3 Flute Step Drill Bit
Shank:1/4 Inch Hex Shank
Groove:3 Spiral Groove
Industrial-grade TiAlN Plating
1. Form Al2O3 protection cover, fit for high speed drilling.
2. Can work without coolant.
3. Hardness up to HRC89.
4. Life service 2-3 times longer than common HSS-Co M35 step drill.
Suitable for Aluminum, insulation board, PVC board chamfer, steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc.
1. Please allow 1-3mm differs due to manual measurement.
2. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding.
1 x 3 Flute Step Drill Bit