Aerosol metering valve 1)Stem:Plastic,Metal 2)Dosage:25,35,50,75,100ul, ... spray valves, 1'' Aerosol Metered spray can valve :1) Stem: plastic, metal 2) Dosage:25ul,35ul,50ul,75ul,100ul,120ul ... ) Mounting cup: tinplate with either golden coating or transparent coating2) Stem: plastic, metal/brass3) Dosage: 25ul, 35ul, 50ul, 75ul, 100ul, ... . 1 inch aerosol spray valve, metering valve, 75ul, Metal stem