Dixon Valve interchange hydraulic fitting. Steel componentry is plated using ROHS compliant trivalent chrome. Made of steel. 3/4-inches coupling and 3/4-inches - 14 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. 3.55-inches length.