1/4 in, Hose Outside Dia. Working Pressure @ 70 F 300 psi, Temp. 1/4" x 50 ft PVC Coupled Multipurpose Air Hose 300 psi BL Range -10 Degrees to 158 Degrees F, Hose Reinforcement Type Spiral, Hose Reinforcement Material Polyethylene, Safety Factor 4:1, Hose Fitting A Material Brass, Hose Fitting B Material Brass, Hose Fitting A Type MNPT, Hose Fitting B Type MNPT, Hose Fitting A Size 1/4 in.