Item No.: H47D104

.Coated with high quality diamond, the diamond hole saw creates a high precision, smooth cut with no broken edges；

.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；

.Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably

When you using the diamond drill bits, please use lubrication (water),otherwise the diamond core drill will burn；Not for use on Concrete or for depths beyond about 1/2"；

.Size - 6mm/0.23", 8mm/0.31", 10mm/0.39", 12mm/0.47",14mm/0.55", 16mm/0.62", 18mm/0.7", 22mm/0.86", 26mm/1.02",32mm/1.26"