Bushing Knockers - Slide control arm bushings in place with an arbor press or hammer. These cast iron drivers are designed to fit closely over the rubber end of the bushing and directly contact the bushing flange. Evenly distributes force to prevent bushing damage. Set of 4 sizes fits bushings from 2-1/8in. to 2-9/16in.. Made in the USA. The (49048) Bearing Race and Seal Driver removes and installs bearings and smaller bushings.