Simpson Strong-Tie's 7/8 in. x 10-1/4 in. SDS-Max Ground Rod Driver provides a purpose-built interface between an SDS-Max rotary hammer and compatible ground rods. The driver is intended to withstand repeated impact during rod installation and helps maintain controlled contact at the top of the rod. Its dedicated ground rod driving design makes it useful for jobs requiring dependable grounding electrode installation, including residential, commercial, and industrial electrical projects. Using the appropriate SDS-Max hammer and correctly sized driver can reduce physical effort and improve productivity when installing grounding rods into soil and other suitable substrates.