John Guest Steel 12mm to 1/2 Inch Hose Joiner. Common push on fitting found in many Jayco caravans and camper trailers. Also common in many other caravans and camper trailers.
John Guest Plastic Joiner 12mm x 1/2 Inch BSPT Male. Common push on fitting found in many Jayco caravans and camper trailers. Also common in many other caravans and camper trailers.