Parker Hannifin 7126NLF-300 Black EPDM Siameez Grade R Fitted Hose Assembly, Crimped B&B Brass, 25' Length, 1/4" ID x 25' Length 1/4" ID x 25' Length Twin line industrial welding hose Red line compatible only with acetylene fuel gas and the green line is compatible with industrial oxygen Tube - Black EPDM Temperature Range: -40F to +200F (-40C to +93C)