This Dixon A325-50RAF 300# single jacket fire hose is 50' in length with 2-1/2" National Standard Thread (NST) male and female expansion ring couplings with aluminum rocker lugs. This hose has a polyester single outer jacket for strength and abrasion resistance, and the inside lining is made of EPDM rubber for resistance to heat and weather. The rocker lug wrenching on each coupler allows for quick attachment and a tight seal. This fire hose has been pressure tested to 300 pounds and has a maximum working pressure of 135 pounds per square inch (psi) and a temperature range of -40 to +140 degrees F. This Dixon fire hose is designed for firefighting applications and meets National Fire Protection Association (NFPA) 1961 standards for fire hoses.Dixon & Coupling Company manufactures pipe and hose fittings and accessories. The company, founded in 1916, is headquartered in Chestertown, MD.