IJU1148 Features: * M-style plugs are case hardened steel, plated to resist rust * Maximum inlet pressure: 300 PSI * Maximum temperature: 250 degrees F Milton M-style "Kwik-change" plugs will interchange with all manufacturers who comply with the dimensional requirements of military specification MIL-C-4109. * 1/4"""" NPT Male M-Style Plug - 2 Pack Warranty: * 1 yr warranty on material and workmanship