sold per piece brass iso with stiff 1/2 actual photo phosted heavyguage per piece BRASS STRAIGHT COUPLING ISO COMPRESSION TYPE BRASS STRAIGHT COUPLING ISO COMPRESSION TYPE 2B Polyethylene brass hose connector 1/2 heavyduty 2B Polyethylene brass hose connector 3/4 heavyduty Brass pipe fittings are typically used for carrying water, chemicals, flammable gases, slurries, and other plumbing substances. Pipe fittings made of brass come in a wide range of shapes and thread sizes to connect, adapt, or control any liquid or gas in pipes. Brass is known to have excellent resistance to corrosion and this makes it ideal for use in pipe fittings. The non-corrosive properties of brass pipe fittings are the reason why they are preferred in areas with high corrosive water properties. High-Temperature Tolerance: Brass has a good conductivity of temperature.