The John Guest Speedfit conversion connection is made to join an imperial pipe to a metric pipe and has Push-Fit installation technology. Without the requirement for conversion adaptors, it can be placed using a copper tube. They can be used with central heating, hot and cold water systems, and are completely demountable. Fast and simple to install and is easy to use in confined spaces, no tools required Push-fit and demountable connection Connects imperial to metric pipe Suitable for central heating systems Lead free and non-toxic, no scale build up and corrosion free, Weight: 0.11904962148 Pounds, Manufacturer: John Guest Speedfit Limited