Amazon.com: Brass Pipe to Hose Fitting,1/2 NPT male X 3/4 Hose Thread Female,Garden Hose Fitting to Pipe Fittings Connector Adapter 3pcs with Extra Rubber Washer 6pcs (1/2NPT male to 3/4 GHT female) :
1/2 in x 3/4 in Fitting Size, Male x Male, Garden Hose Adapter - 4KG81|4KG81 - Grainger
4 Pieces Garden Hose Tap Connector 1/2 Inch And 3/4 Inch Size 2-in-1 And 1/2 Inch Hose Pipe Quick Connector - Garden Water Connectors - AliExpress
Sportsman Series 1 Inch 2-Cycle Water Transfer Pump With 3/4 inch Garden Hose Adapter, 1 - Fred Meyer
Amazon.com : M MINGLE Garden Hose Adapter, 3/4 Inch GHT to 1/2 Inch NPT, Double Male and Female Brass Connector, with Extra 8 Washers : Patio, Lawn & Garden
Apollo 1/2-in Threaded Drip Irrigation Female Adapter in the Drip Irrigation Fittings department at Lowes.com
Garden Hose Adapter Brass MHT x 3/4″ MPT (1/2″ FPT)