Haofy 10Pcs Tool Drill Bit Set Dot Hole Saw Cutter Glass Marble Tile 8-50mm Hardware Tools Glass Drill Bit

Features: Brand New & High Quality! This coated core drill bit removes a complete circle from glass tiles marble granite ceramic or other materials and just needs water for lubrication. Works better with a electric drill (not included). Easy to use start your hole diagonally make a round trace and then hold drill straight. Good performance and long life. Excellent for making neat and accurate hole on glass and tile. Size: 8/10/14/16/18/22/26/38/45/50mm This glass hole opener drill is made of sturdy material which is more durable and sturdy. How To Use: 1. The drill position on the marble 30 degree then open a pit on it 2. Slowly up the bit to 45 degrees and then gently drill 3. Continue up the bit to 60 degrees and then gently drill 4. Up to a certain point of angle continue to drill 5. Finally reached 90 degrees add some water in the drill pipes for cooling extend bit life Package Includes: 1 x 10pcs Drill Bit Hole Saw Note: When using the bit please add water to cool down the temperature to prevent core drill being burnt and extend its service life.