Heater Hose Hose Inside Dia 3/4 in Hose Outside Dia 1 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 50 psi Temp Range 257 Degrees F Standards SAE 20R3 Class D2 Bend Radius 4.5 in Hose Configuration Bulk Hose