Material: Iron Surface treatment: galvanized Diameter: 25mm/1 inch Connection type: directly sleeved with screws The all-steel structure ensures the mechanical protection of the raceway and connects 2 EMT pipes. The plating color is uniform, bright and beautiful, zinc and iron are mutually soluble, the combination is firm, high plasticity and extensibility. Using 25mm EMT fixing screw coupling, you can safely connect 2 EMT pipes together.