Multifunctional drill bit set: This strong tungsten carbide tip drill bit is sharp, easy to locate, stable to drill, quick to open without breaking the boundary, neatly and smoothly. The 3-flat shaft ensures that you can hold it in place without slipping and scratching, without damaging the tile glaze. Multipurpose: The masonry drill bit set is widely used. It can easily penetrate and reduce breakouts in various materials such as ceramic tile, glass, hard plastic, cement concrete, mirror travertine, brick wall, wood. Robust: High quality multi-purpose drill set made of tungsten carbide, which prevents cracking and offers a longer service life, robust and durable. Note: When drilling hard material (glass, porcelain tiles, marble or granite) please use water for lubrication. Handy tool: ceramic drill bit, ideal for drilling quicker holes in bathroom tiles or wall mirrors. It is a useful tool set for the home and comes with a 1-piece plastic cover for easy storage. Different sizes: 7-piece drill with 4 different sizes, 2 x 6 mm (1/4 "), 2 x 8 mm (5/16 "), 2 x 10 mm (3/8 ") , 1 x 12 mm (1/2 "), different sizes for different purposes so that you can meet different of your daily needs. Product description Color Name: golden 7-piece drill set made of triangular alloy for tile drill, glass drill, ceramic drill, concrete drill, masonry drill, brick drill and diamond drill (6 mm, 6 mm, 8 mm, 8 mm, 10 mm, 10 mm, 12 mm) Important product features: Widely used Ideal for drilling holes in bathroom tiles or wall mirrors. Once the drill bit is drilled through the tile or mirror, it can easily deal with the masonry behind it. Premium material Carbide with a reinforced head that prevents bit cracks and offers a longer service life. Stable performance U-shaped slot design with quick removal of drilling dust. The 3-flat shank enables the drill to be held and stabilized in the drill. SIMPLE operation When drilling hard material (glass, porcelain tile, marble, or granite), use water to lubricate. Specification: Color Name: Gold Material: triangle alloy Wave: 3 - flat wave Size: 6mm, 6mm, 8mm, 8mm, 10mm, 10mm, 12mm (1/4 ", 1/4 ", 5/16 ", 5/16 ", 3/8 ", 3/8 ", 1/2 ") Delivery note: 2 x glass drill bits * 6 mm (1/4 ") 2 x glass drill bits * 8 mm (5/16 ") 2 x glass drill bits * 10 mm (3/8 ") 1 x glass drill bit * 12 mm (1/2 ") 1 x transparent plastic box