JG Speedfit brass female cylinder adaptor push-fit fitting that connects pipe to a female thread hot cylinder. The push-fit fitting 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. Safe flame-free installation, with no hot works, glue or flux Grip & Seal collet with stainless steel teeth and main O-Ring seal Compatible with Speedfit PEX and polybutylene plastic pipe (inserts required) and copper pipe Suitable for hot and cold water and central heating systems