... demand 3.S16949 certificates. Air Gladhandpneumatic connector:Material:cast iron,aluminium ,copper Type:Germany design,normal type.auto typePacking: ... corrosion and anti-contamination.5. Used to connect the air brake system of the heavy truck,semi-trailer,tractor ... ,full trailer,tractor etc.8.Available type:Germany design,auto type,normal type.9.Model number:Germany design,normal design. Air Gladhand