Amazon.com : Gardena tap connector for indoor taps: Connection for indoor taps, including adapter for aerator head, spanner for easy fitting, for kitchen and bathroom (18210-20) : Tools & Home Improvement
Amazon.com : GARDENA Hose Connector Set for Indoor Taps, Grey/Orange : Garden Hose Parts : Patio, Lawn & Garden
Gardena 18202 Tap Connector, 33.3 mm (G 1 Inch), Threaded Tap Connector | eBay
Gardena Premium Female Metal Faucet Tap Quick Connect Connector - Bliffert Lumber and Hardware