The Milwaukee 48-20-8988 Glass and Tile Bit Set includes 4 drill bits made of metal with a diameter of 1/8 inch. These red and silver bits are designed for use with air drills, air compressors, and regular drills. The set is lightweight at 1.2 lbs and features a compact design with a length of 5.25 inches and a depth of 5.25 inches. Perfect for drilling into glass, tile, and other hard materials, this set from trusted brand Milwaukee is a valuable addition to any workshop or tool collection.