A sledgehammer gets old fast when you have twenty bars to install. This caused my Low/Medium Air Hammer to turn into a slide to lean on the post, pull the trigger and watch the post go down. I had to wait for the air to fill, but it was worth the wait. There's also plenty of control to get the post to the exact height I wanted. The neighbor had a problem with the cement and quickly got through this removal process. All air hammers must be supplied with a hammer head.