ITEM NAME:6pcs 1/4" 6mm Diamond Holesaw Drill Bit For Tile Ceramic Glass Porcelain Marble.Ideal for drilling ceramic tiles, glass, marble, slate and porcelain tiles up to hardness grade 5. --Diamond hole saw tile ceramic glass porcelain marble drill. 6 x Diamond Hole Saw (6mm). Start your hole diagonally, make a round trace and then hold drill straight.
