Features: Make of Alloys steel for superior enduring and strength. It features high hardness, impact resistance, and antirust protections for long terms use. This rotary hammer drill is designs for easy installation and removal without the need for additional tool, saving you time and increasing work efficiency. Our ground rod driver eliminates the need for manual installation of ground rod, fence posts, and electric fence posts. It can save time and improve safety. The ground rod driver adapter bit is easy to install and disassemble without the assistance of others tool. This Crosses head ground rod driver is suitable for most square shanks electric hammer drill bit. Before purchasing, please confirm whether the size and connector is suitable for your tool. Specifications: Materials: Alloys steel Size: about 33x86mm/1.3x3.39inch Other detail size as shown in the picture Package Includes: 1Pc Ground Rod Driver note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.