70mm 80 Grit Diamond Countersink Drill Bit – 6mm Shank, 90° for Stone, Glass & Tile

The 70mm 80 Grit Diamond Countersink Drill Bit (90° Angle, 6mm Shank) is a heavy-duty large-diameter hole chamfering, beveling, and deburring tool engineered for stone, glass, ceramic, and tile applications. Featuring high-concentration 80 grit electroplated diamond abrasive on a sturdy 6mm cylindrical shank, this bit effortlessly enlarges existing holes, creates neat conical countersinks for flush fasteners, and cleans ragged hole edges to prevent edge chipping.

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• Head Diameter: 70mm
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• Angle: 90° conical chamfer
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• Grit: 80 Grit coarse diamond for efficient material removal
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• Shank Diameter: 6.0mm rotary shank
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• Bond Type: Electroplated diamond
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• Applications: Large hole beveling, edge chamfering, hole enlarging, and countersinking in granite, marble, tile, ceramic, and glass
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For best results and extended tool lifespan, use with water lubrication or coolant during drilling.