【Diamond Drill Bits】These drill bit kits are made of upgraded carbon steel with smooth nickel plating surface to resist corrosion, sharp and durable without edge collapse. 【Premium Quality】Coated with high quality diamond to improve drill efficiency and creates a sharp, high precision and smooth cut. 【Hole Saw Set 10 Sizes】1/4", 5/16", 3/8", 1/2", 9/16", 5/8", 11/16", 4/5", 7/8", 1-1/5"，to meet various drill needs. 【Versatile Uses】Diamond hole saw drill bit set kit are used to drill Glass, Porcelain, Ceramic, Marble, Granite Stone, Bottles, SUBEIREYFR, Pots. 【Tips】Please keep adding water when drilling to extend the life.Besides the water lubrication will improve the drilling experience. Diamond drill bits set, 10 PCS glass drill bit, diamond hole saw set for ceramic tile porcelain marble granite stone bottles. These diamond drill bits set can help you remove a complete hole from glass ceramic tile bottles marble porcelain and granite stone. Here we demonstrate our premium diamond drill bits for you! Product Material： These diamond hole saw made of high-speed carbon steel that is durable and have a long service lifetime which are high quality and good performance for making clean and accurate hole. Widely Applications: These diamond hole saw perfect for drilling glass, tile, porcelain, granite, bottles, ceramic, marble and and other hard surfaces etc. 10 Sizes Includes 1/4", 5/16", 3/8", 1/2", 16/25", 5/8", 11/16", 3/4", 7/8", 1-1/5", Different sizes glass cutting drill bit to meet you various demands! Large Clearance Hole These ceramic drill bits are design with large clearance hole facilitate the entrance of cooling water and escape of chips. Making the drilling process more easy and relax. Package Includes: 10 PCS glass drill bit for bottles