Designed, manufactured and assembled in the UK by John Guest Speedfit. Connectors use a grip then seal collet arrangement. The female coupler is ideal for the connection of taps, and Toilets. Simply push the fitting fully onto the pipe and turn onto the thread. Should the need arise to demount the connection unlock the nut push the collet towards the body of the fitting and pull the pipe to release. Additional Details ------------------------------ Bullet point: "DURABLE QUICK CONNECT FITTINGS: Upgrade your setup with these durable polypropylene faucet connectors. Engineered for reliability, they deliver fast, secure connections that work seamlessly with 7/16"" OD UNS quick connect fittings and 3/8"" OD push to connect fittings. Designed to prevent leaks and withstand heavy use, these fittings ensure long-lasting, versatile tools and systems performance in any setup. " Product description: Designed, manufactured and assembled in the UK by John Guest Speedfit. Connectors use a grip then seal collet arrangement. The female coupler is ideal for the connection of taps, and Toilets. Simply push the fitting fully onto the pipe and turn onto the thread. Should the need arise to demount the connection unlock the nut push the collet towards the body of the fitting and pull the pipe to release.