9 Pieces Glass Drill Bit Set, Professional Tile Set (3/4/5/6/6/6/8/10/12 mm), for Various Materials, Tiles, Glass, Ceramics, Porcelain, Wood, Mirrors, and Masonry

【Meet All Your Needs】Package includes 9-piece tile drill bits: 3 mm (1/8"), 4 mm (5/32"), 5 mm (3/16"), 6 mm (1/4"), 6 mm (1/4"), 6 mm (1/4"),8 mm (5/16"), 10 mm (3/8"), 12 mm (1/2"), 7 different diamond drill bit sizes, allowing you to start drilling with the smallest bit and progress to the required size. 【High-quality Performance】This strong carbide tipped drill bit features a spearhead design, is sharp, easy to locate, drills stably, and at high speed. It won't break the boundary, opening neatly and smoothly. The 3-point shank ensures you can hold it firmly without slipping or scratching, and won't damage the tile glaze. 【Perfect Cutting】The strong tungsten carbide tip with its pointed design can easily penetrate various materials, is easy to locate, drills stably, and at high speed. It won't break the boundary, opening neatly and smoothly. (Rotating thread design for smoother drilling and chip removal). 【Easy Installation & Use】This porcelain tile drill bit is suitable for most common drills, including electric drills, hand drills, and bench drills. Its strong carbide drill bits extend the life of glass drill bits. The double U-groove design ensures fast drilling with minimal dust, and the 3-flat shank allows the drill bit to be easily inserted and held securely. 【Widely Used】The strong tungsten carbide tip easily penetrates various materials (porcelain ceramic tiles, glass, mirrors, plastic masonry, and wood). When using the drill bits for drilling concrete, brick walls, and other hard materials (glass, porcelain floor tiles, marble, or granite), please use water for lubrication.