KASTWAVE Diamond Drill Bits, Diamond Hole Saw Drill Bit Set Kit, Glass Drill Bit for Bottles,Pots, Marble, Granite Stone, Tile Cutting 0.23 Inch - 2 Inch（6mm - 50mm）15 Pcs

aoliihou Dry Diamond Drill Bits Set, Small Diamond Hole Saw Kit, 7 PCs, for Granite Marble Porcelain Tile Ceramic Stone Glass Hard Materials (not for Wood), Round Shank, 6mm ×2 8mm 10mm 12mm 14mm 16mm