Easy to use, conversion connector by John Guest Speedfit is a classic push-fit fitting designed to connect imperial to a metric pipe. Highly durable, these pipe connectors are manufactured and assembled in the UK by John Guest Speedfit. 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.