[NEVER USED] 15PCS Diamond Drill Bits Hole Saws for Glass, Ceramic, Porcelain, Marble, Tile and Granite 6-50mm

Product never used, packaging damaged during transport. Unopened product, repackaged in our warehouses, in perfect working condition, warranty available.

General Description: This 15-piece diamond drill bit set is designed for efficiently drilling hard materials such as glass, ceramic, marble, granite, and tile. With diameters ranging from 6 mm to 50 mm, these drill bits are ideal for DIY and home decorating projects. Technical Specifications: Quantity: 15 pieces Diameters: 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 25 mm, 26 mm, 28 mm, 30 mm, 40 mm, 50 mm Material: High-quality natural diamond grit, carbon steel with nickel-plated surface Technique: Special electroplating Compatibility and Accessories: Suitable for: Lithium drill, AC drill, hammer drill, drill press Installation: Step 1: Mark the start of the hole with a pen and keep it moist with water or coolant. Step 2: Drill at a 45-degree angle to start the hole at a low speed. Step 3: Maintain minimal pressure and reduce speed as you exit to avoid stripping. Usage: Use water to lubricate during drilling to prevent overheating. Avoid drilling materials thicker than 0.5 inches. To extend drill bit life, reduce drilling speed and dampen the surface. Other information: Package includes: 15 diamond drill bits (6-50 mm). Caution: This product is sold by Gravonoh; counterfeit products are not guaranteed.