Twin Line Welding Hose, Hose Inside Dia. 1/4 in, Hose Outside Dia. 1/2 in, Hose Length 12 1/2 ft, Hose Color Green, Red, Hose Tube Material EPDM, Hose Cover Material EPDM, Hose Reinforcement Type Spiral, Hose Reinforcement Material Fiber, Burst Pressure 800 psi, Max. Working Pressure @ 70 F 200 psi, Temp. Range -40 Degrees to 120 Degrees F, Standards ARPM IP-7, Safety Factor 4:1, Hose Configuration Coupled Assembly, Hose Grade R, Hose Fitting A Material Brass, Hose Fitting B Material Brass