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Gunmetal Coupling is suitable for use with hard suction hoses and has standard round threads as per the set quality norms. Further, it is made under the closed supervision of our expert by using superior quality gunmetal and natural rubber, which has self-locking system. Further, it is used to connect together a number of hose pipes to increase the range of use and throw of water of the fire hydrant system. Our provided Gunmetal Coupling is known for their unique features like castings are clean and free from gross porosity, coupling washer are made up of natural rubber.