Diamond Drill Bits, are also know as Diamond Core Drill Bits, Diamond Hole Saws or Bonded Diamond Drill Bits. They are often called Glass Drill or Tile Drill, but they are much more versatile since they are used to drill glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, granite, light stone, and fiberglass. Material: steel Good Performance and long life. Excellent for making clean and accurate hole on glass and tile. Works better with a electric drill . Size：outside diameter 10mm，length about 5.5cm Applicable Industry: Suitable for Stone, Tiles, Ceramics, Glass and Granite, etc Processing tips： Always use water for lubrication., otherwise the diamond core drill will burn. Can be used with a standard electric drill. Start your hole diagonally, make a round trace and then hold drill straight. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably. Use Coolant. Minimum pressure. package list： 5 Pcs * Diamond Coated Drill Bit If you have any quality problems，Please do not worry. Contact us！
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