Neige - Diamond hole drill bit set, 15 piece hole saw set for glass, marble, granite stone

【Glass Drill Bits】These diamond drill bits are made of industrial grade carbon steel with a nickel plated body to resist corrosion. Fine workmanship and super wear-resistant, sharp 【High-quality drill bit】Each hole is treated with smooth and precise surface treatment, and the top of the hole is thickened to achieve excellent cutting resistance 【Tile hole saw 15 sizes】 6/ 8/ 10/ 12/ 14/ 16/ 18/ 20/ 22/ 25/ 26/ 28/ 30/ 40/ 50mm, to meet different needs 【Large usage】Used on drilled glass, wood, tile bottles, blocks, jars, ceramics, slate stone, granite clear stone and other hard surfaces 【Attention】Please continue to add water when diamond burs work on glass or ceramic. Lower drill pressure and increased use of water lubrication will increase bit life.