This is a complete air-control kit for use with any pneumatic-operated (air) retracts. The kit includes: small air tank, 5 ft. red & purple air line, fittings, retaining nuts, variable rate control valve, fill valve, 2 Quick Disconnects, On-Board Pressure Gauge, and fill fitting.
The operating valve requires approximate 1/4" of push rod travel and functions with standard or mini servos.