Proline Series 3/4-in x 3/4-in Threaded Female Hose x Female Hose Adapter Fitting in the Brass Fittings department at Lowes.com
Amazon.com: M MINGLE Garden Hose Adapter, Male to Male, Female to Female, 3/ 4 Inch Brass Connector, 4-Pack with Extra 4 Washers : Patio, Lawn & Garden
Amazon.com : Solid Brass Garden Hose Adapter, 3/4'' GHT Garden Hose Male x 1'' NPT Female Connector, 1 Inch Male Garden Hose Thread to 1.3 Inch Pipe Fittings Thread, with Rubber Gasket