Fence post-pounder
A fence post-pounder (or just post-pounder as it's also known) is a piece of fence equipment that makes it possible to install fence posts without concrete.
Post pounders come in a variety of forms, starting with the very simple manual post pounders that work well for small quantities of posts where cost is a factor, to gas-powered post pounders and even skid steer or tractor-mounted post pounders for farm fences and similar.
When you're looking for a post-pounder, remember that the more posts you have, the more power you will probably need to get the job done. Also, look for a fence post pounder that has the right diameter fitting or a reducer if there is one available. This allows you to use one post pounder for different fence post diameters.
Buy a gas-powered fence post pounder on Amazon