Detailed Product Description Features: 1) The designs of easy, automatic connection provide instantaneous connection of air lines2) Application: compressed airSpecifications: 1) Male: 1/4", 3/8", 1/2" 2) Female: 1/4", 3/8", 1/2" 3) Hose: 1/4", 5/16", 3/8", 1/2" 4) PU and nylon hose: 4 x 6mm, 5 x 8mm, 6.5 x 10mm, 8 x 12mm 5) Material: brass, steel (other materials are available on request)6) ...