The Interstate Pneumatics 120 PSI Fixed Preset In-Line Regulator is designed to protect intermittently operated air tools and air line systems against mid to long-terms damage from over pressurization. Equipped with standard 1/4 in. in and out ports for easy and fast installation to tools and in-line air pressure systems. Factory preset 120 PSI provides the ultimate pressure consistency. Manufactured from high-strength aluminum alloy with anodized construction for corrosion resistance throughout a variety of jobs. This adjustable preset regulator is the ideal peace of mind solution for equipment that requires a consistent flow of pressure.