Durable Diamond Tip Drill Bits with great performance. Excellent for making clean and accurate holes. Can be used on glass, tile, fibreglass, porcelain, ceramic, slate marble and granite light stone.
Some Handy Tips
* Can be used with a standard electric or battery drill.
* Start your hole diagonally, make a round trace and then hold drill straight.
* Always use water for lubrication, otherwise the diamond core drill will burn.
* Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.