This tool is used exclusively for adjusting the height or balancing a dry set fence line. This is not your ordinary sledge hammer. All steel construction makes this tool very tough. Specifically designed to maximize impact and improve results with every hit, requiring less hits and effort to achieve the same results as an ordinary sledge hammer. This is because of the unique dead blow, all steel head with angled handle insuring solid contact with top of the post, preventing damage. The Thumper combined with The Block will decrease the time and effort your crews spend adjusting fence lines.