Milwaukee 4-PC Tile and Natural Stone Drill Bit Set is expertly crafted to deliver exceptional durability and performance, lasting up to twice as long thanks to reinforced tips and precision-ground carbide heads. These drill bits are specially designed for use with hammer drill drivers, making them i for drilling through glass, tile, ceramic, granite, marble, limestone, slate, and natural stone. The hammer mode capability ensures faster drilling in tougher materials like granite and marble, providing efficiency and reliability for your projects. Versatile in application, these bits can be used in both drill-only and hammer drill modes, though they are not for porcelain tile. This set includes four sizes to cover a range of needs: 1/8", 3/16", 1/4", and 5/16" tile and natural stone bits. Model Number: 48-20-8998