Here s the answer! When servicing king pins this unit is quickly mounted on the front axle...a unique quot;swinging gatequot; feature makes setup easy. Both straight and tapered king pins may be serviced. Five special collars and two pins accommodate king pins of 7/8quot; to 2quot; in diameter and up to 11 1/4quot; long. With tooling in position up to 30 tons of hydraulic force is applied...even the most tightly quot;frozenquot; king pin is eased out. A job that could consume the better part of a work day is done in minutes. With the special anchor pin adapter installed in the pusher s base block and the unit properly positioned over the brake spider the anchor pin can be quickly and easily pressed out. The unit measures 27 1/2quot; high x 8 1/2quot; wide. Made in U.S.A.