GARDENA 00931-50 coupling to switch from 1/2 "to 1/2" - GARDENA...
GARDENA clutch sentence hose coupling for extension hose 13 mm (1/2 ") and 15 mm (5/8"), even at a high water pressure, simple assembly (18283-20) : Amazon.co.uk: Garden
Gardena 18281-20 System Hose Connector Set - Orange : Amazon.co.uk: Garden
GARDENA Hose Fittings
GARDENA coupling: Connecting portion for secure hose connection, connecting two tubes to extend, for the transition of 19 mm (3/4) - on 13 mm (1/2) hoses, packaged (2931-20) : Amazon.co.uk: Garden
GARDENA Extension Joint (2931-37) • Lifestyle Home Garden
Accessory Adapter – Blue Diamond Garden Centre Ltd