Driven by a motor operating off a tractor's or skid steer's hydraulics, the Post-Vibe Vibrating Post Driver provides steady down-pressure and quick taps (not overhead impact) to install posts safely and about 40 percent faster than conventional powered drivers. It's designed to drive any kind of steel or wood post and can reach up to 19 feet high. A steel cup lowers over the top of the post so it can't move or deflect sideways. The cup can be replaced with a variety of bolt-on attachments, including T-bar, weights, carrying basket, and wood splitter.