One drill bit replaces two drill bits (1x glass & tile drill bit + 1x Mansonry drill bit), Perfect for drilling fastner holes in bathroom tiles, or wall mirrors. Once it drills through the tile or mirror this drill bit will cope easily with any masonry behind it 5 Pcs drill bit set with 4 different sizes: 2x 6mm(1/4inch), 1x 8mm(5/16inch), 1x 10mm(3/8inch), 1x 12mm(1/2inch) U type slot design with fast drilling dust remove, 3-flats allows drill bit to be held tightly and stably in drill. When drilling hard material (glass, porcelain floor tile, marble or granite), please use water for lubrication Material: tungsten carbide : 3-flats Color: Black & Silver Used for: tile, concrete, brick, glass, plastic and wood,etc High quality, durable, pricise drilling in various materials at same time,convinient for use with long life time : drill. Do not use impact mode of drill or hammers Package Contents: 2x 6mm(1/4inch) Drill Bit 1x 8mm(5/16inch) Drill Bit 1x 10mm(3/8inch) Drill Bit 1x 12mm(1/2inch) Drill Bit Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.