Diamond Drill Bit Set, 15PCS(8mm-50mm) Carbon Steel Hole Saw Cutter Tools Set for Glass/Tile/Ceramic/Marble/Porcelain Cutting. Size: 15PCS(8mm-50mm). Colour: 15PCS(8mm-50mm). It is used to drill hard surfaces such as glass, wood, ceramic tile bottles, block jars, ceramics, slate, granite pumice, etc.
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