10Pcs 6mm Glass Drill Bits Set Porcelain Ceramic Tile Marble Tungsten Spear Head
10Pcs 6mm Spear Head Ceramic Porcelain Marble Tungsten Drill Bit Glass Tile. 10 Pcs 6mm Spear Head Ceramic Porcelain Marble Tungsten Drill Bit Glass Tile. This drill bits will drill without chipping or cracking the material when properly used.