John Guest plug for blanking off un-used connection points on 12mm Speedfit push fit fittings in hot and cold water systems in campervans, motorhomes, caravans, and boats.
The push-fit design enables instant connections with a leak-proof seal and they are easy to disassemble (without tools) by simply pushing the fitting's collet in and removing the plug.
Made from non toxic, food grade materials, safe for use with drinking water.