John Guest 12mm x 1/2" Brass Barb. This John Guest fitting converts from 12mm John Guest tubing to 12mm flexible hose. Features and Benefits:Tube to Hose Nickel-Plated Brass AdaptorSolid Brass ConnectionGenuine John Guest Brand Specifications:Material: Nickel-Plated BrassPush In Connector: 12mmBarb: 1/2" (12mm) What is...

John Guest 12mm x 1/2" Male BSP Brass Elbow Adaptor. This John Guest fitting is the most common water pipe thread used on taps, pumps and water heaters. The threaded end is 1/2" Male BSP thread and the other end accepts smooth 12mm fittings...

John Guest 12mm to 10mm Reducing Connector. This John Guest fitting allows you to reduce 12mm red or blue pipe down to 10mm pipe. Features and Benefits:12mm to 10mm Reducing Straight ConnectorSuits 12mm OD plastic pipe on endReduces to 10mm OD plastic pipe on...