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The 6" zinc plated coupling is a versatile and durable fitting designed primarily for connecting metal spiral tubing to other metal spiral tubing. It is also required where a flexible hose needs to be connected to the end of a metal spiral tube. The coupling ensures a secure and tight connection, compensating for the slightly larger outer diameter (OD) of metal spiral tubing that would otherwise make it impossible to fit a flexible hose. By using this coupling, users can ensure a smooth transition between spiral tubing and hose. Its zinc finish offers superior corrosion resistance, making it suitable for use in environments where moisture might cause rust. This product is a must-have for anyone looking to complete their spiral tubing setup efficiently and securely.