... fire hose coupling A): type: Ansi Pin ; B) Size: 3", 4" and 6"; C) Material: aluminum; D) qualited ... for connecting hose to hydrants or fire engine pumps and other hose appliances (nozzles, wyes, manifolds, strainers ... , etc).A) type: Ansi Pin type;B) Size: 3", 4" and 6";C) We ensure you high quality, ... charge of the design of all products and new mould, and all the items need past working pressure ...