Ideal Application -This diamond coated core drill bit removes a complete circle from glass, marble, tiles, granite, ceramic, or other. They are perfect for drill glass, tile bottles, blocks jars, fiberglass porcelain tile ceramic, slate Mable, granite light stone
Super Material -These diamond drill bits made of high-speed steel that is durable and have a long service life, which is high quality and good performance that excellent for making a clean and accurate hole.
Sharp&Smooth Cut -Coated with high-quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably