Double Brass 1/4" MNPT Fittings, MAX working pressure 300psi Bend restrictors reduce kinking and help to increase the life of the air hose Solid brass end fitting never corrode and seal better than aluminum, steel, or zinc Rubber/PVC blend construction offers the best of both material, lightweight than rubber air hose, more flexible than PVC 3/8" x 50ft hybrid air hose, with 1 year limited warranty The Wynnsky Green Air Hose is 3/8" Diameter and 50ft. long. The Rubber/PVC blend construction offers very good cold weather flexibility and coils easily for storage. It is designed to be lighter and less bulky than traditional solid rubber hose, lay flatter and avoid binding, kinking, and tangling. Including double brass 1/4" MNPT fittings, the max pressure of the air hose is 300 psi. It is ideal for garage, shop, industry, home and many other uses.