Features: 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 HSS-Co/M35 More than 4241and 6542 high-speed steel materials
Specifications Name: 3 Flute Step Drill Bit Model: A02683 Material: M35 Cobalt(HSS-Co) Coated: TiAlN Coated Hardness: HRC89 Flute: 3 Flutes 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.
Uses Suitable for Aluminum, insulation board, PVC board chamfer, steel, aluminum, sheet metal, carbon steel, 304 stainless steel, etc. Note 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. Package Included 1 x 3 Flute Step Drill Bit
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