Photo 1 of 10pc Dry Diamond Core Drill Bits Set, Tile Drill bits for Ceramic Porcelain Marble Granite Stone Glass, Integrated Coolant for Dry Drilling, Round Shank, Size 3/16" 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"

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Photo 1 of 10pc Dry Diamond Core Drill Bits Set, Tile Drill bits for Ceramic Porcelain Marble Granite Stone Glass, Integrated Coolant for Dry Drilling, Round Shank, Size 3/16" 1/4" 5/16" 3/8" 1/2" 9/16" 5/8"