Gas Hose, Hose Inside Dia. 1/4 in, Hose Length 4 ft, Hose Color Black, Hose Tube Material Rubber, Hose Cover Material TPE, Max. Working Pressure @ 70 F 350 psi, Standards EN 559/ISO 3821, Hose Configuration Coupled Assembly, Hose Grade Liquid Propane, Hose Fitting A Material Brass, Hose Fitting B Material Brass, Hose Fitting A Type FLH, Hose Fitting B Type FLH, Hose Fitting A Size 9/16 in, Hose Fitting B Size 9/16 in Liquid propane hose assemblies feature an inner layer of gas-resistant rubber, a middle layer of reinforcing weave that allows the hose to withstand high pressure, and an outer layer that protects against external damage, sunlight, and ozone. These hoses are most often used for brazing, soldering, heating, and gas-cutting applications in the roofing and construction industries.