Watris Veiyi 5Pcs Counterbore Drill Bit Set, Hss-Al Straight Shank 4 Flutes End

Specifications: Material: HSS-AL super-hard high speed steel Hardness: HRC65~68° Size:(Boot*Blade Diameter*Shank Diameter*Full Length) M3=3.2*5.9*6*45mm M4=4.2*7.4*6*48mm M5=5.2*8.9*6*51mm M6=6.2*10.4*8*58mm M8=8.2*13.4*10*67mm Weight: 128g(approx.) Package Includes: 1 Set(5pcs) x Countersink Mill Cutters Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.

Product Features

  • 【High Speed Steel】Made of HSS-AL hard high speed steel, with high toughness, abrasion resistance, high-speed cutting for the high hardness.
  • 【Professional Tool】Mainly used to cut holes that allow bolts or screw heads to be screwed into. Can be processed directly or finely processed to the heat treatment tool.
  • 【High Alignment Precision】The end mill cutter cuts hole and bottom hole with high alignment precision. Due to its high production efficiency, it is commonly used in the machining industry.
  • 【Improve Efficiency】Reduce the time of changing tool, improve the efficiency of machine actuator movement, and save tool making time.
  • 【Widely Use】Countersink drill bit set is suitable for grinding copper, aluminum, steel, cast iron, etc. Usually used for assembling on a milling machine.



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