This is a Green 200 Psi Oxygen Hose 20' Length CS121202 X500 With Fittings and Spool. The spool is aluminum. The hose is 200 psi wp the model number is CS121202 X500 . We have not been able to find the manufacturer. The hose has fittings on either end. The hoses are military surplus they were originally packed with a liquid oxygen converter.