6 PCS Shank Diameter 3mm - 7mm HSS Straight Shank Titanium Coated Twist Drill Bit Micro Mini Drilling Tools

6 PCS Shank Diameter 3mm - 7mm HSS Straight Shank Titanium Coated Twist Drill Bit Micro Mini Drilling Tools

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6 PCS Shank Diameter 3mm-7mm HSS Straight Shank Titanium Coated Twist Drill Bit Micro Mini Drilling Tools
 
  Made of high quality high speed steel, good toughness, wear resistance, good drilling ability. Suitable for high speed machining, especially suitable for processing titanium aluminum parts, die steel, steel, iron, spring iron and other metal materials. High surface hardness, can improve machining precision & surface quality, reduce the friction with the workpiece, improve the heat resistance and wear resistance, which improves the processing speed.
 
  Material: HSS Item color: gold tone surface treatment: Titanium Coated Shank type: straight round shank Shank diameter     Full length
001        3mm                 60mm
002       3.5mm               70mm
003       4mm                 75mm
004       4.5mm               80mm
005       5.0mm               85mm
006       5.5mm               91mm
007       6mm                  93mm
008       6.5mm               98mm
009       7mm                 1

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