This ground rod driver is made of steel material, which is impact, rust resistant. It is a heavy duty one-piece tool, to use. Our ground rod driver is compatible with all other SDS-PLUS hammer drill (not compatible with tools that accept SDS-MAX). this tool has thick metal wall, which can withstand greater impact without damage. With it, you do not need to use sledgehammer and planks to install ground rods. This product is not just for standard steel T-posts, but also for small signs or shallow steel single posts supporting electrical outlets. Product Name:Ground Rod Driver Colour:Silver Material:steel Size:E:1.9cm Package Contents: 1 * Ground 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.