Interstate Pneumatics LF10-L1H Pressure Switch - 1/4 inch FPT Single Port - Push Pull Switch 20 amps 85-125 psi fits Dewalt Hitachi Emglo Makita Porter Cable Ridgid Rolair air compressors 6.3 mm unloader valve connection 1/4 inch NPT Female connector Cut off pressure 85-125 PSI Amperage rating 20 amps Single port Push/Pull Button