WOIYIC 7Pcs 5/6/8/10/12/14/16mm Wax Cooled Dry Diamond Hole Saw Drill Bits for Glass, Porcelain, Tile, Ceramic, Granite and Marble

【Dry Tile Drill】Dry cast tile drills are brazed and can be easily used without adding water. Internal sealing wax, solid-state condensation treatment 【Complete Kit】Including 7 dry drill bits, including 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, the most complete size to meet your different needs 【Whole Forging】Scientific chip removal design, the hole saw drill body is forged to make the drill more stable without shaking 【Emery Quality】The drill bits use electroplated emery. High temperature quenching, high hardness, sharpness and durability, long service life 【Versatile Milling】Versatile diamond milling cutter for granite and marble, masonry, concrete, tile/ceramic, glass, hard plastic