... commercial vehicle parts, covering automatic slack adjusters, manual slack adjusters, spring brake chambers, air brake chambers, brake valves, U-joints, cam shafts, brake shoes, pillow blocks, ... gland head,elecric coupler,air hose,spring brake chamber,seven electric coupler,diaphragm,slack adjuster,button valve,quick release valve,cut off ... , caterpillar,GM and trailer, bus,and so on.. Slack Adjuster