. . . . Specialty connector EARTH GUIDE -.M18X1.5 12L EUROSeam couplings are used to connect and disconnect individual hydraulic lines.Recommended for equipment such as tractors where oil leakage can be dangerous to workers or other equipment.Very easily yet safely without risk, you can connect and disconnect various types of machines and equipment powered by a single hydraulic drive, such as a tractor.Specification:Type of quick coupler: euro ISO standardType of quick coupler: plugType of thread: short, externalMaterial: galvanized steel. . . . .