The NOBVIAM 6-Piece Diamond Drill Bit Set is made for clean, controlled drilling on hard surfaces in everyday home improvement and DIY projects. This set includes 5 diamond hole saw bits and 1 carbide-tipped drill bit, giving you practical options for drilling tile, glass, granite, ceramic, marble, quartz stone, brick, masonry, and ceramic flower pots. Each diamond core drill bit is built with durable vacuum-brazed diamond grit bonded to a strong steel body. The diamond tipped cutting edge helps create smoother holes with less chipping when the bits are used correctly. Whether you are working on bathroom tile, kitchen countertop surfaces, glass panels, stone, or ceramic pots, this diamond drill bit set is designed to support cleaner results and better control. The round shank design fits most standard drill chucks and works with cordless drills, corded drills, and drill presses. These tile drill bits, glass drill bits, porcelain drill bits, and ceramic drill bits are suitable for a variety of common repair and installation tasks, such as making holes for pipes, fixtures, wires, drainage, plant pots, and decorative projects. For best results, make a small starter dimple before drilling. Start the bit at a 45° angle to prevent slipping, then slowly move the drill upright as the hole begins to form. Gently rock the drill while cutting to help the bit work smoothly. Use water cooling during drilling to reduce heat buildup, improve cutting performance, and help extend bit life. Recommended drilling speed is 1,600–5,000 RPM. Do not use hammer mode. Choose NOBVIAM diamond drill bits for glass, ceramic, porcelain tile, granite, marble, brick, and masonry when you need a practical drill bit set for home repair, bathroom installation, kitchen projects, workshop use, and everyday DIY drilling tasks.