6-Piece Diamond Tile Drill Bit Set, Diamond Drill Bit for Porcelain Stoneware with 5, 6, 8, 10, and 12 mm Diameters, Metal Bit for 6 mm Tiles, Tile Drill Bit for Ceramic, Glass, Granite, Marble, and Q

General Description This diamond tile drill bit set includes 6 pieces, including a 6 mm yellow cemented carbide bit (pre-drilled) and bits of 5 mm, 6 mm, 8 mm, 10 mm, and 12 mm. The yellow bit is designed for pre-drilling only and should not be used for extended periods to avoid rapid wear. For optimal efficiency, it is recommended to replace the yellow bit with the blue bit after use. Technical Specifications Composition: 6 diamond drill bits Pre-drilled bit: 1 x 6 mm (yellow cemented carbide) Other sizes: 5 mm, 8 mm, 10 mm, 12 mm Compatible materials: tile, glass, granite, marble Blue diamond bit with cooling wax Installation First, install the yellow bit on the hand drill at a 45-degree angle. Quickly rotate the bit on the surface of the material to pre-drill. Then replace it with the appropriately sized blue diamond drill bit for drilling the material. Usage: It is recommended to add water during drilling to cool the bits and prolong their lifespan. The blue diamond drill bit, thanks to its wax structure, automatically absorbs and dissipates heat, improving drilling efficiency.