ZYfire Fire Hose - 2" ID Single Jacket EPDM Fire Hose Firefighter Hose with NPSH Aluminum Couplings White Industrial Hose Lightweight Lay Flat Water Hose for Use in Firefighting-U.S. Warehouse" The package you received includes: 2" ID single jacket EPDM fire hose with M F NPSH aluminum couplings. The hose length options we offer you are: 50 FT and 100 FT. One end of the fire hydrant hose is a 2" National Pipe Straight Hose (NPSH) female coupling, and the other end is a 2" NPSH male coupling. These couplings are made of aluminum, which is lightweight and highly durable. The jacket of the firefighter hose is made of 100% Virgin Polyester,