Hand-Held Single controllers are very solid and work well in environments where one handed operation is preferred. Inflation buttons feature full on-off or deflate position. Overpressure safety relief valves built-in with separate gauges for each bag to operate independently but with one air supply source. Controllers will operate with compressor, SCBA breathing air source or even truck brake air source. Machined aluminum body is rugged and lightweight. Rubber handle with surface nodes work will in cold temperatures, hot temperatures and has a positive grip when wet or icy.