Meco 20pcs 3-40mm Diamond Drill Bits Set Glass Marble Granite Hole Saw Cutter

Description: 20pcs 3-40mm Diamond Drill Bits Set Glass Marble Granite Hole Saw Cutter Drill Bits Specifications: Material: steel Size: 3/4/5/6/8/10/12/14/16/18/20/22/25/26/28/30/32/35/38/40mm 0.12/0.16/0.20/0.24/0.31/0.39/0.47/0.55/0.63/0.71/0.78/0.87/0.98/1.02/1.10/1.18/1.26/1.38/1.50/1.57 inch Quantity: 20 pcs Features: --This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs water for lubrication. --Always use lubrication (water) otherwise the diamond core drill will burn. --Can be used with a standard electric drill. --Start your hole diagonally, make a round trace and then hold drill straight. Use note: 1. Start your hole diagonally, make a round trace and then hold drill straight. 2. Always use lubrication (water) otherwise the diamond core drill will burn. Notice: 1.Please allow a bit error due to manual measurement. please make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. More Details: