Firestone Air-Rite Air Command II Heavy Duty Air Compressor Kit w/Dual Pneumatic Gauge (WR17602168)Perfect for tow trucks, off road applications and motor homes, this pneumatic control mounts in cab to level two air springs independently or two pairs equally. Kit includes a super heavy duty compressor and a 1 2 gallon air tank. Features: Air spring pressure control kit with pneumatic, dual gauge control Allows you to manually control air pressure levels from vehicle cab Operates air bags with dual switches Push switches up to inflate air springs