70 mm Glass Drill Hole Saw with Centre Drill Bit Tile Drill Bit for Glass, Tile, Ceramic, Marble, Limestone, Porcelain Diamond Drill

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  • Heat dissipation and dust removal the diamond drill has a U-shaped chip removal groove + side opening design to accelerate chip removal and reduce dust accumulation. At the same time, it promotes the entry of condensation, effectively cools the drill and extends its service life
  • Sharp cutting the diamond hole saw uses vacuum soldering technology and the cutting head is evenly coated with diamond particles from the inside to the outside, which is not afraid of various materials with high hardness and can cut quickly and easily
  • Instructions for use when drilling, the drill should be held perpendicular to the cutting surface. After drilling the circular groove for positioning, the pilot drill can be removed and continue drilling. The drill should be cooled with water during this time

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