Diamond drill bits, set of 10 hollow drill bits for ceramic tiles, glass, porcelain Diamond drill bit set for ceramic tiles Drill bits for glass, 6 mm 30 mm - RWForet materials dli

10 sizes (diameter): 6 mm (1/4'), 8 mm (5/16'), 10 mm (3/8'), 12 mm (1/2'), 15 mm (3/5'), 16mm (5/8''), 18mm (11/16''), 20mm (3/4''), 22mm (7/8''), 30mm (1-1/5''). Meets most of your needs.Stainless and Durable: Made of high-strength carbon steel with a smooth nickel-plated surface to extend the service life.Fast, Precise and Smooth Cutting: Coated with high-quality diamond to improve drilling speed and create a clean, high-precision, and smooth cut without broken edges in seconds.Application: Drilling glass, tile bottles, block jars, fiberglass porcelain tile, ceramic, marble slate, light granite stone. Do not use on concrete or at depths greater than about 1/2''.Caution: Please keep the speed at 800-1000 per minute, keep adding water to cool the drill, strictly prohibit dry drilling. Product Description 10Pcs Diamond Drill Bit Set Glass Hole Saw for Glass Tile Ceramic Marble Bottles DIY 6mm-30mm Features: Good Performance: Diamond dust coating provides superior cutting performance and strength. Wide Application of Tile Hole Saw: The coated core bit removes a complete circle from glass, tile, marble, granite, ceramic or other materials and only needs water for lubrication. 10 Sizes: No matter what size hole you want, it can always drill a perfect hole for you. Specifications: Material: High Quality Steel, Diamond Dust Coating Color: Silver Size: 6 - 30 mm / 0.23'-1.18' (6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 16 mm, 18 mm, 20 mm, 22 mm, 30 mm) Quantity: 10 pieces Note: If you smell a burning odor, back off! Either your speed is too high or the pressure you are applying is too much. Your drill bit should never be hot to the touch, not even burning hot. ●Minimum speed ●Always use lubrication (water) ●Minimum pressure Package contents: 10 tile hole saws