Tile Glass Drill Bits, Masonry Carbide Tips Drilling Bits for Soft Ceramic Tile, Mirror, Plastic | Spiral Slot 1/8, 3/16, 1/4, 5/16, 3/8, 1/2 Inch

Applications: Glass Drill Bits Set 1/8",3/16",1/4",5/16",3/8",1/2" with Hex Shank for Ceramic Tile Marble Mirror & Glass , Can’t be used to drill hard tile.

High Quality: Made of special grade of long service life tungsten carbide tip with sharped cutting edges; drill bits are carbide tipped for long service life, avoids breakage and more resistant to extreme loads for longer tool life. Hardened steel design stands up to the toughest daily use.

Smooth Hole: Position drill by making slight dent with the tip before drilling. Small incision resistance. Feature drilling stably, opening neat, smooth, no broken edges, no tremor phenomenon, chip easily.

Safe operation: Drill at a low speed to avoid fracture. Use water lubrication will extend drill bit service life considerably.

Notice: Do not use with hammer drill, water lubrication must be used to follow these instructions.