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Jewelers use Diamond Drill Cylinder, with diamond particles electroplated onto 3/32" shank twist drills. Perfect for drilling stones, pearls, glass, or ceramics. Uniform shank diameters enable jewelers to use fixed-collet handpieces. Water should be used as a lubricant when using diamond-coated instruments.
Regular Twist Drill
Perfect for drilling stones, pearls, glass, or ceramics. more info
Longevity is assured, as the diamond particles are electroplated onto the surface of the metal. more info