Milwaukee 4-PC Glass and Tile Drill Bit Set features exact start tips that create clean holes with minimal bit walking, making your drilling tasks more precise and efficient. These drill bits are crafted with sharpened carbide for fast drilling and a reinforced carbide head that enhances durability, ensuring long-lasting performance. They are specially designed for drilling holes in glass and ceramic tile using drill-drivers, providing reliable results every time. Please note that these bits are not for use on porcelain tile. This set includes four sizes: 1/8", 3/8", 1/4", and 5/16" glass and tile bits, covering a range of common drilling needs. Model Number: 48-20-8988