This tool is an essential item for those who do their own brake and service work. If you don’t own a four foot breaker bar and 3/4′ drive socket, then you are out of luck trying to remove or tighten your axle nut. This tool works by first applying pressure to the tool with a 1/2″ drive ratchet. Then the tool is struck sharply with a large hammer or sledge to loosen. A compact and economical tool for your box!