This ground rod driver is made of forged steel material, which is impact and rust resistant. It is a heavy-duty one-piece tool designed for durability. The ground rod driver is compatible with all SDS-PLUS hammer drills (not compatible with SDS-MAX tools). It features a thick metal wall construction that can withstand high impact without damage, eliminating the need for a sledgehammer and wooden planks when installing ground rods. This tool is suitable not only for standard steel T-posts but also for small signs or shallow steel single posts used to support electrical outlets. Product Name: Ground Rod Driver Color: Silver Material: Steel Size: B: 4.5cm / C: Outer diameter 38.46mm, Inner diameter 30.73mm / D: 2.1cm / E: 1.9cm / F: Flat / A: 6.5cm Package Contents: 1 x Ground Rod Driver Note: The package includes only the items listed above. Other products are not included. Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance is +/- 1-3cm.