?6 pieces fine grade high durable drill bits in 4 different sizes: that is 2 x 6 mm(1/4"), 1 x 8 mm(5/16"), 1 x 10 mm(3/8"), 1 x 12 mm(1/2") fit your different needs
? High Quality Multi-purpose Drill Bit Set: Tungsten Carbide Tipped for prolonged life and heavy-duty use
?Special Design: U type slot design with fast drilling dust remove, 3-flats shank allows drill bit to be held tightly and stably in power drill.
?Cut Perfect Circles Holes: Suitable for glass, ceramic tile, wood, ceramic, stone, concrete, brick, etc. When drilling hard material (glass, porcelain floor tile, marble or granite), please use water for lubrication
? One drill bit replaces two drill bits (1x glass & tile drill bit + 1x Mansonry drill bit). Ideal 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