General description JG Speedfit brass female cylinder adaptor is a push-fit fitting designed to connect pipe to a female thread hot cylinder. This fitting allows for a quicker and easier installation in confined spaces compared to traditional methods, as it eliminates the need for hot works. Technical specifications Material: Brass Connection type: Push-fit Compatibility: Speedfit PEX, polybutylene plastic pipe (inserts required), and copper pipe Suitable for: Hot and cold water and central heating systems Other information 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