The OTC 30-Ton King Pin Pusher Set, No. 4240A, assists technicians when changing king pins and brake anchor pins or heavy duty vehicles. The set removes both straight and tapered king pins. It includes five special collars and two pins to adapt the tool for various king pin and brake anchor pin applications. The tool uses hydraulic force to replace king pins ranging from 7/8" to 2" in diameter and up to 11-1/4" long. The included hand pump drives the cylinder.