Ensure secure and neat pipe joints with this bulk 25-pack of End Feed Straight Couplings. Designed for joining two equal lengths of 15mm pipe (copper or stainless steel) in a straight run, this traditional solder ring fitting requires soldering to create a permanent, leak-proof seal. Ideal for professional installation and repair of domestic plumbing, central heating, and water systems. A cost-effective solution for all your standard 15mm pipe coupling needs.