1. Sharp and wear-resistant
Sharp drill blades are quenched at high temperature
High-precision grinding
2. Smooth cutting
Scientifically developed blade row
Cutting is smoother
3. Solid cutter body
Adopts precision craftsmanship
Unparalleled sturdiness
Specifications 9-step spiral groove 4-20mm single
Material High-speed steel
Shank diameter (mm) 6.35mm
Total length 100.5mm
Chip groove length (mm) 4-32
Outer edge angle (??) 138
Shank diameter 6.35 (mm)
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