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 ACETAL CONSTRUCTION: This quick-connect union tee fitting is crafted from durable acetal material, ensuring superior strength and heat resistance for reliable performance. Designed to meet the demands of reverse osmosis water filter systems, it resists wear and maintains integrity under high-pressure plumbing conditions. This 5/16 push to connect fittings is perfect for water purifiers, undersink water filters, and home improvement projects. 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.