Milwaukee Tool has a full line of demolition steel accessories with a variety of shanks (SDS-Plus, SDS-Max, spline or round hex, 3/4 hex, and 1-1/8 collared hex with Ntch). The Milwaukee 48-62-4091 is a 9-3/4 in. SDS-Max demo ground rod driver. This demolition steel hammer accessory is ideally used with Milwaukee SDS-Max demolition hammer 5446-21 and 5339 - 21. made from forged high grade steel, this hammer iron is used by utility companies to bury grounding rods in the soil. Internal diameter of the ground rod driver and capacity of the hammer determine the size of ground rod able to be installed.