NETUME 6 Pack Double Male Connectors, Hose End Connector Extender To Connect 1/2 Inch Plastic Tap Connector, Male To Male Hose Connector For Join Garden Hose Pipe Tube (Green) : Amazon.co.uk: Garden
Brass Double Male Hose Connector : Amazon.co.uk: Garden
Flomasta Outlet Hose Connector 17mm - Screwfix
Double Hose connector for Garden Tap : Amazon.co.uk: Garden
double hose connector, 9mm dia - Spareparts / Accessories - Einhell Service