John Guest Speedfit brass male coupler for connecting metric pipe using a male thread. To connect the push-fit end, simply push onto a plastic or copper pipe. To demount the connection, push the collet towards the body of the push-fit fitting and pull the pipe to release. The John Guest Speedfit brass male coupler is quicker and easier to install in confined spaces than traditional methods as it eliminates the need for hot works. Designed, manufactured and assembled in the UK. Instant push-fit connection and durable male thread Safe flame-free installation, with no hot works, glue or flux Compatible with Speedfit PEX and polybutylene plastic pipe (inserts required) and copper pipe Suitable for hot and cold water and central heating systems