The ground rod driver is made of alloy steel, strong and durable, with high hardness and strength, wear and impact resistant, and offers great protection against rust, allowing for long-term use. Our ground rod driver is compatible with most SDS-Max system hammers and hammer drills. Please ensure it fits your tool before purchasing. The drill bit driver is easy to install and disassemble without the need for additional tools, saving time and improving working efficiency. The bit driver with a metal wall can withstand greater impact without damage. With this grounding rod driver, there is no need to use sledgehammers and wooden boards to install grounding rods, small fence posts, or small electric fence posts. It helps save time and effort. Product Name: Ground Rod Driver Color: Silver Material: Alloy Steel Size: Inner diameter: 45mm (1.77 in), Length: 200mm (7.87 in), Hole depth: 50mm (1.97 in) Package Contents: 1 x Ground Rod Driver Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement allows an error of +/- 1-3cm.