3X HSS Spiral Step Cone Drill Bit Blue Coated Metal Hole Cutter Wood Drill Bits

Material: High-speed Steel (HSS 4241). Shape of Shank : Triangular. Type: Drill Bit. 1 x Step Drill Bit 4-12mm. 1 x Step Drill Bit 4-20mm. 1 x Step Drill Bit 4-32mm. Color: Gold. Size: 4-12mm / 4-20mm / 4-32mm.

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