A post driver or fence driver is a tool that's used to driving fence posts and other types of posts into the ground. It has a heavy steel pipe which is closed on one end and has handles on the sides. It's a tool that's designed for one person. There are different weight model options to choose from. Post drivers are a handy tool around the farm or anyplace to help with fencing. They are a fairly inexpensive pieces of equipment that can help with manual labour of putting up poles or fence posts. They have been used since the early 1930s.