ID, 50ft. 3/8" x 50' Green EPDM Rubber Air Hose, 300 PSI, 1/4" MNPT x MNPT Range -40 to 210 Degrees F, Tube Material EPDM, Cover Material EPDM, Spiral Synthetic Yarn Reinforcement length, 1/4 in. Green Multipurpose Rubber Air Hose, 300 PSI, Coupled Assembly, 3/8 in.