15-piece diamond hole saw set for glass, tile, ceramic, marble and porcelain – high-strength carbon steel

【EXQUISITE CRAFTSMANSHIP】Our diamond drill bits are made of industrial-grade carbon steel with a nickel-plated coating for corrosion resistance; beautifully crafted, super wear-resistant, and sharp.

【HIGH-QUALITY DRILL BITS】Each hole features a smooth and precise surface finish, and the thick diamond coating provides excellent cutting force for maximum drilling efficiency.

【LARGE CLEARANCE HOLES】These glass hole saws are positioned along the drill bit to facilitate the removal of chips and other particles during the ingress and drilling of cooling water.

【WIDE APPLICATION】 This glass drill bit set contains 15 different drill bits to meet various needs. It is used for drilling hard surfaces such as glass, wood, ceramic tile bottles, block pots, ceramics, slate, granite pumice stone, etc.

【NOTE】When cutting hard materials, be sure to keep the tool cool to avoid damaging the material being drilled and premature wear of the tool; water lubrication is necessary during drilling, which can extend the life of the drill bit set.