B&K 3/4" Brass Compression Repair Pipe Coupling for installing or repairing galvanized or copper water pipes. Made from durable brass with brass nuts and rubber gaskets, this coupling is rated for 125 PSI at temperatures up to 210 degrees Fahrenheit. It effortlessly fits both iron pipes and copper tubes, ensuring versatility in plumbing projects. Designed for longevity, this coupling is lead-free and requires restraining after installation.