... Stones Diamond drilling bits For Granite, Marble, Natural Stone, Ceramic Tile, Porcelain Tile. Wet Diamond Bits For Drilling Stones Core ... drill bits stone drill bits1. Granite, Marble, Natural Stone, Ceramic Tile, Porcelain Tile.2. 10mm segment for extended cutting life ... tool to suit your exact needs.Huzhou Gu's Imp. & Exp. Co., Ltd. is specialized in researching, designing and manufacturing various ...