Feature:

1. 100% brand new and high quality!
2. Diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other. Can be used with a standard electric drill.
3. Easy to use: Start your hole diagonally, make a round trace and then hold drill straight.
4. Warning: They should be use lubrication (water), Otherwise the diamond core drill will be burned.
5. Size(Diameter): 6/8/10/14/16/18/22/35/40/50mm

Package includes:

10Pcs Alloy Diamond Coated Hole Saw Drill Bits

• 10Pcs Alloy Hole saw / core drill style bit Kit
• Size(Diameter): 6/8/10/14/16/18/22/35/40/50mm
• Apply to Drill Glass, Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone
• Kindly Tips: Not for use on Concrete or for depths beyond about 1/2"; Water is required for lubrication when drilling
• Please keep the speed in 1500-2000 per minute, keep adding water to keep the drill cool, strictly prohibit from dry drilling! and reduced drill speeds, low drill pressure and increase the use of water lubrication will extend drill bit life considerably