Interstate Pneumatics LF10-4H Pressure Switch - 1/4 inch FPT Four Port Bend Lever 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 connection Cut off pressure 85-125 PSI Amperage Rating 20 Amps Four ports Bend lever switch