Diamond Coated Dormer Drill Bits Medium-Fine Grit 3/32" 12Pcs

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12 Diamond Coated Dormer Drill Bits Great for Metalsmiths, Metal Working & Drilling This is a new set of 12 diamond coated twist drill bits Made with electroplated diamond particle s great for drilling stone, ceramic, glass, and other hard non-metallic materials These are made of superior high grade steel All drill bits are medium to fine grit Use with standard handpiece and a small amount of water as lubricant These have 3/32" (2.3 mm) shanks These bits measure approximately 0.889, 0.99, 1.181, 1.397, 1.512, 1.613, 1.702, 1.778, 1.994, 2.083 and 2.705 mm (0.034", 0.038", 0.046", 0.054", 0.059", 0.063", 0.067", 0.069", 0.078", 0.082" and 0.106") Show more