Drill Bit Diamond Core Saw Hole Tool Set Tile Glass Ceramic Porcelain Marble 15pcs15/64 - 1-31/32 inch / 6 - 50mm / 0.23"-1.97" Drill Bit Diamond Core Saw Hole Tool SetDiamond coated core drill bit is easy to useWith high quality, good performance and long life, Can be used with a standard air & electric drill,Excellent for making a clean and accurate hole on glass, tile, and marble Specifications: Product: Diamond Saw HoleType: Hole SawMaterial: Steel (HS)Suiface treatment: Nickel platedBit coated: Diamond coatedMeasurement unit : mm / inchColor: Metallic Silver. Grit: 100Model: DB-HS1-17Shank Diameter: 13/64 inch - 5/16 inch / 5-8mm Size: 15/64 - 1-31/32 inch / 6 - 50mm / 0.23"-1.97"15/64 inch / 6mm / 0.23" 5/16 inch / 8mm / 0.31"25/64 inch / 10mm / 0.39"15/32 inch / 12mm / 0.47"35/64 inch / 14mm / 0.55" 5/8 inch / 16mm / 0.62"45/64 inch / 18mm / 0.70"25/32 inch / 20mm / 0.79"55/64 inch / 22mm / 0.87"63/64 inch / 25mm / 0.98"1-1/32 inch / 26mm / 1.02"1-7/64 inch / 28mm / 1.10"1 3/16 inch / 30mm / 1.18"1 37/64 inch / 40mm / 1.57"1 31/32 inch / 50mm / 1.97" Features: This Drill Bit Diamond Core Saw Hole Tool Set can remove a complete circle a complete circle from glass, porcelain, tiles, marble, granite, ceramic or other materials. Always use lubrication (water), otherwise, the diamond core drill will burn.Start a hole diagonally, make a round trace and the hold drill straight. Package Included: 15pcs x Drill Bit Diamond Core Saw Hole Tool Set Check out our other items! Check out our Hown Store Click here, Subscribe to this seller's newsletter, and you'll also follow them for featured items and special offersShipping Policies:We ship to the Lower 48 States only (Does NOT include Hawaii or Alaska)We cannot ship to PO Boxes/APO'sWe cannot combine shipping.No Local Pickup. All items will be shipped directly to you from our warehouses within 1-3 business days. Most items are delivered within 3-5 business days, however, please allow 3-9 business days. All items are in stock when they are listed. Inventory is tracked and updated regularly. However, if demand exceeds our supply, we will give the customer the following options: Full refund. Have the item back ordered and shipped when it becomes available. We will offer other items in similar style and quality. Your buy / purchase of the item implies you agree to this policy. If you have a question about a product not otherwise answered in the item description, please contact us via eCRATER messages first and allow us the opportunity to help you and be sure we have what you're looking for. Exchange/Return Policy:Your satisfaction is guaranteed! If for any reason you are unhappy with your item, just return it within 30 days for a full refund, minus shipping cost. Please contact us prior to initiating a return so that we can issue you a refund authorization.We accept returns under the condition that it does not open the packaging has not been damaged merchandise.We have money back warranty program and after sale service.Payment PolicyWe require Immediate Payment. Must be an authorized address.