Tap connector 33.3 mm (G 1 inch) from Gardena: connector for taps with thread, tight connection, easy handling, packed (18202-20) - DKSFJKL
HOZELOCK - Outdoor Tap Connector ø 33.3mm (1") : For Threaded Outdoor Taps, Watertight Connection, Adapter for Connecting a Garden Hose to the Tap, Easy and Robust [2158P0000] : Amazon.co.uk: Garden