Heater Hose, Hose Inside Dia. 1/2 in, Hose Outside Dia. 13/16 in, Hose Length 50 ft, Hose Tube Material EPDM, Hose Cover Material EPDM, Hose Reinforcement Type Spiral, Hose Reinforcement Material Polyester, Hose Color Black, Max. Working Pressure @ 70 F 250 psi, Temp. Range 250 Degrees F, Standards SAE 20R3 Class D2, Hose Configuration Bulk Hose