Diablos SDS-Max Ground Rod Drivers deliver extreme durability and stability when driving rods into soil or hardened clay. A unique heat treatment process strengthens the steel body to withstand the stress of high-powered hammer drills and the impact of driving rods into the earth. Designed for driving 5/8 In. and 3/4 In. rods to meet NEC and UL ground rod standards. Optimized for maximum performance in corded and cordless SDS-Max rotary hammers.