Tune-up Kit for Ingersoll Rand 285B Series Impact Wrench. Includes: spring pin, rear rotor bearing, handle gasket, throttle valve plunger, stop pin, ball, spring, reverse valve seal, hammer case gasket, vane pack, slot cover, throttle valve, throttle valve spring, o-ring, oil sealing, front rotor bearing, spring, o-ring, tray, and kit card