[Strong & Durable] The ground rod driver is made of Metal, strong and durable, with high hardness and strength, wear and impact resistant and offer great protection against rust, and can be used for a long time. [Type] All of them are 85mm/3.35 inches in length. [Wide Compatibility] Our ground rod driver is compatible with almost all of SDS plus system rotary hammers and hammer drills. [Easy To Install] The drill bit driver is easy to install and disassemble without the assistance of other tools, saving your time and improving working efficiency. The bit driver with a metal wall can withstand greater impact without damage. [Practical Tool] With this grounding rod driver, you do not need to use sledgehammers and wooden boards to install grounding rods, small fence posts, and small electric fence posts. It can save your time and give you more safety. Colour:silver Material:Metal Size:the inside diameter of :21mm Package Contents: 1X SDS Plus Ground Rod Drive 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.