Ensure a secure, leak-proof connection in your plumbing system with the John Guest Speedfit 15mm Pipe Inserts. These essential components are designed to provide critical structural support to your pipework, keeping the ends perfectly round and preventing deformation after cutting. By maintaining the integrity of the pipe connection, these inserts enhance the overall sealing performance of your push-fit or compression fittings. Ideal for use in hot and cold water supplies as well as central heating installations, these professional-grade inserts offer reliability and ease of use for any DIY or trade plumbing project. Proudly designed and manufactured in the UK, this bulk pack contains 150 inserts, providing excellent value for large-scale installations. Product summary: John Guest Speedfit pipe insert, 15mm plumbing support sleeve, push-fit connector accessory, central heating pipe reinforcement, pack of 150 pipe inserts.