4pcs Brass Basic hose coupling Set with soft coat). We have five types ofgaden water connectorsets which suit for rubber protector, they are FL6801 till FL6805, meanwhile, we add rubber protector outside most of our brass fitting products, according to reuqirements from different markets. Working pressure: No more than 150PSI; Working temperature: -20 to 120 degree Centi; Before delivery, all the items will be strictly tested for its working pressure, leakage, surface finishing and thread test.