Abstract: A tool for installing and removing a staple comprising an elongated body which has an installing head at one end and a base at the opposite end. In between the head and the base is mounted a graspable handle which is to be slideable to exert a hammering force on a collar which is mounted on the body. This collar is to be adjustable longitudinally on the body to any desired position that will be convenient to the user. The head of the tool includes a staple removing device which is to be connected to a staple to effect removal thereof after it has been installed.