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: SUPERIOR STRENGTH & VERSATILITY: These John Guest fittings are made from acetal copolymer with a food-grade nitrile O-ring, offering greater strength and heat resistance. Ideal for water filters, reverse osmosis, and home water filtration, they’re also suitable for CO2 lines, pneumatic quick connect, and vacuum applications. Compatible with 1/4 quick connect fittings, quick connect tube fittings, and RO water setups. Material: Acetal. 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.