65mm Diamond Core Drill Bit, Hollow Drill Bit for Slate, Porcelain, Marble, Glass, Ceramic, Porcelain, Tile, Marble, Granite (65mm Diameter)

【High-Quality Materials】 The diamond hole saw is made of high-carbon steel with a clean, smooth opening and no broken edges. It offers low cutting resistance, stable drilling, and won't chip the edge.

【Good Design】 The central pilot holes and side holes help with easy waste removal; the diamond drill bit has a gold coating to prevent rust and improve surface corrosion resistance.

【Wide Application】 Diamond drill bits can be used to drill ceramic tiles, marble, glass, granite, concrete, and other hard materials. It will work with all electric drills and impact drills.

【Please note】 When cutting hard materials, it is important to ensure the drill bit remains cool to avoid damaging the material being drilled and premature wear of the bit. Water is necessary for lubrication during drilling, which can extend the life of the drill bit.