Dixon Valve interchange hydraulic fitting. Steel componentry is plated using ROHS compliant trivalent chrome. Made of steel. 1-inches coupling and 1-inches - 11 1/2 NPTF female. Nitrile (Buna-N) seals are standard providing a temperature range of -40 degrees F to +250 degrees F. Steel coupler sleeves are hardened to resist deformation and maximize service life. 4.13-inches length.