DEWALT's 5/8 in. x 8 in. x 10 in. ELITE SERIES SDS-Plus High-Impact 4-Cutter Carbide Drill Bit incorporates an anchor wear mark that helps indicate when the bit has reached the point where proper anchor-hole sizing may no longer be assured. Its carbide-tipped construction is intended for repeated drilling in concrete and masonry, while the four-cutter head provides a more consistent hole profile than basic two-cutter masonry bits. With an 8 in. usable drilling length and 10 in. overall length, it provides substantial reach for anchor installation and general rotary hammer work. The bit is supplied individually and uses an SDS-Plus connection for compatible rotary hammer tools.