Milton Chicago style fittings, also known as "Crowfoot" or "Claw" type fittings, are a two claw quick coupler generally used on air hoses such as jackhammer hose. The fittings are unique in that you simply push the mating fittings together and twist the fitting creating a locked and sealed connection. They are made from malleable zinc plated iron for mild corrosion resistance and come with safety clips and lanyards. They are rated for a maximum of 150 PSI.