The John Guest Speedfit 15mm pipe insert provides extra internal support when connecting Speedfit pipe to a Speedfit push-fit or compression fitting. It helps keep the pipe end round, minimises distortion caused by cutting and supports a secure connection. The insert also helps maintain the structural integrity of the pipework and increases rigidity when a side load is applied. Suitable for hot and cold water and central heating systems. Designed and manufactured in the UK. Supplied as a pack of 10 white plastic inserts. Model number TSM15NP. Designed and manufactured in the UK by John Guest. Helps enhance sealing when used with Speedfit push-fit and compression fittings. Supports the pipe connection and helps keep the pipe end round after cutting. Helps stiffen 15mm pipework where side loads may be applied. Suitable for hot and cold water, as well as central heating systems. Pack of 10 inserts for 15mm Speedfit pipe connections. Plastic construction provides added support inside the pipe connection. Use when connecting Speedfit pipe to a Speedfit push-fit or compression fitting.