311CCL-34 Diameter: 0.75" Features: -Coupling. -Galvanized steel finish. -Complete with gasket. -For general utility on small piping such as that used on machinery equipment, well work, pumps, compressors, engines. -Couplings require no threading, no exact pipe fittings and each coupling will absorb expansion or contraction without leakage. -All fittings are pressure tested, 150 PSI. -Zinc coating is applied by hot dip process. Specifications: -Diameter:. -0.5". -0.75". -1.25". -1" . -1.5". -2".