Features and Benefits: A-style couplers are push type A-style coupler bodies are steel, plated to resist rust A-style plugs are case hardened steel, plated to resist rust Maximum inlet pressure: 300 PSI Maximum temperature: 250 degrees F Kit includes: (1) #775 1/4" NPT female coupler; (1) #778 1/4" NPT female plug and (3) #7771/4" NPT male plugs.