Milwaukee SDS-Max is designed for efficient drilling of large holes with relatively shallow depths. Featuring a one-piece carbide-tipped core bit, it cuts a precise kerf, requiring the operator to remove the inside core before continuing deeper drilling. For improved accuracy, using the centering bit 48-20-5495 is , while the drift key 48-20-5497 helps remove the centering bit from the core bit. Available with SDS Max or spline shanks, these core bits come in diameters from 1-1/2 inches to 6 inches, with overall lengths of 11-3/8 inches or 22 inches and a drilling depth of 3 inches. The asymmetric tooth pitch with alternating tooth geometries enhances material pulverization speed. Its one-piece design ensures maximum energy transfer, and the thick wall core body provides durability even in large hammers. The fluted core exterior reduces friction loss and efficiently clears debris, making it an i choice for demanding drilling tasks. Model Number: 48-20-5440