HSS Step Drill Bit Set Hex Shank Titanium Reamer Bits 4-12/20/35mm Hole Cutter

This step drill is made from high quality HSS steel, and with the Titanium coated to reduce friction and heat. -1/4"(6.35mm) Hex Shank. -Material: High Speed Steel. Finish: Titanium Coated. -Suitable for less than 25HRC hardness workpieces, such as carbon steel, sheet iron, insulation board, PVC board, wood, etc.

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