- SMALL RESISTANCE: Small incision resistance, opening speed is quickly, easy removal of chips and other advantages.Also help to open accurately. Large chip holes to ensure that when the punching smooth, punching accurate.
- DURABLE: Nickel-plated with a diamond dust coating offers superior performance and cutting strength.Extended service life.This diamond drill bits are high quality and good performance that excellent for making clean and accurate hole.
- IDEAL FOR: This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or other.Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.
TIP: Can be used with a standard electric drill, Always use lubrication (water), otherwise the diamond core drill will burn. Warnings: Not for use on Concrete or for depths beyond about 2"; Water is required for lubrication when drilling.
16 SIZES: Total 16 different sizes (3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 18mm, 25mm 32mm, 40mm 50mm, 60mm, 70mm, 80mm, 100mm).Different sizes meet your different needs,help you in different places.