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The serrated drill bit increases the sharpness and opening speed. Sharper and more durable than ordinary electroplated drill bits, especially suitable for thick glass openings. (10mm thick glass generally has about 300 openings.) Using electroplated diamond (50-60 grits), the opener creates precise, smooth cuts with no broken edges. Nickel plating improves hardness, wear resistance, corrosion resistance, and greatly extends the drill bit life.

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Wholesale hollow drill bits for metal Available In Various Types And Diameters

Specifications:Drilling Diameter: 12mm / 0.47Drilling Depth: 27mm / 1.06Round Shank Diameter: 8mm / 0.31Total Length: 46mm / 1.81Material

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Wholesale hollow drill bits for metal Available In Various Types And Diameters

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