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: PUSH TO CONNECT DESIGN: This John Guest Acetal Reducing Union features a push-to-connect mechanism designed for effortless installation in any water filter or reverse osmosis water filter system. Ideal for home improvement projects, this push to connect fitting securely connects 1/2" OD x 3/8" OD tubing without requiring tools. Its user-friendly design ensures leak-proof performance in your water purifier system and a hassle-free connection every time. 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.