[ structure] - Made of high-grade chromium vanadium steel and with a heat treatment process, this ground rod driver ensures excellent durability and long-lasting lifespan. Professional ground stick driving - effortlessly drive a grinding stick or stick without the need for a heavy hammer. Designed for 5/8inch and 3/4inch ground poles. [Best size] - The total length is 170mm, the inner diameter is 19mm, and the outer diameter is 25mm. The driver has a socket depth of 110mm and a rod length of 60mm. It can accommodate ground rods with a diameter of up to 17mm. Wide compatibility: The powerful one piece design eliminates the need for manual hammering and ensures effortless installation of grounding rods. Perfect choice for commercial and industrial applications. The standard SDS Plus calf is suitable for all SDS sizes that affect rotating hammers and hammer drills. Note:There may be scratches on the metal , which does not affect use. Colour:Silver-Gray Material:Metal Size:25x170mm Package Contents: 1 * Rod Driver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.