Diamond Drill Bits Set, 16 PCS Diamond Hole Saw Set, Glass Drill Bit for Ceramic Tile Porcelain Marble Granite Stone Bottles, 1/4 to 2 Inch

• This Tile Hole Saw have 16 Sizes(Diameter): 6mm(1/4"), 8mm(5/16"), 10mm(3/8"), 12mm(1/2"), 14mm(9/16"), 16mm(5/8"), 18mm(11/16"), 20mm(3/4"), 22mm(7/8"), 25mm(1"), 28mm(1-3/32"), 30mm(1-1/5"),35mm(1-2/5"), 40mm(1-1/2"), 45mm(1-3/4"), 50mm(2"). Satisfy most of your different needs.
• Rustless & Durable: This diamond drill bits are made of high strength Carbon Steel with smooth nickel plating surface to extend the service life.
• Quick, Sharp & Smooth Cut: Each diamond hole saw was coated with high quality Diamond to enhance the drilling speed and creates a sharp, high precision and smooth cut with no broken edges In Seconds. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.
• Application: Drilling holes for Glass, Tile Bottles, Blocks Jars, Fiber Glass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone (especially for glass AND tile). Not for use on Concrete or for depths beyond about 1/2". Will work with all electric drills.
• Attention: Please keep the speed in 800-1000 per minute, keep adding water to keep the drill cool, strictly prohibit from dry drilling.

Diamond Drill Bit Set, 16 PCS Glass Hole Saw for Tiles Glass Ceramic Marble Bottles DIY,6mm -- 50mm Features: Good performance:diamond dust coating offers superior performance and cutting strength. Wide application of the Tile Hole Saw: coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs water for lubrication. 16 SIZES: No matter which 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 - 50mm / 0.23"-1.97" (6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 35mm,40mm,45mm, 50mm) Quantity: 16 pcs Note: If you smell burning, back off! Either your speed is too high or the pressure you're applying is too much. You're drill bit should never be hot to the touch, not even warm. ●Slowest speed ● Always use lubrication (water) ● Minimum pressure Package Included: 16 x Tile Hole Saw