Amazon.com: M MINGLE Garden Hose Adapter, Female to Female, 3/4 Inch Heavy Duty Brass Connect Fittings with Dual Swivel, Pressure Washer to Garden Hose Connector, 2-Pack with Extra 4 Washers and 1
Anderson Metals Brass Garden Hose Fitting, Connector, 3/4" Female Hose ID x 3/4" Male Pipe x 1/2" Tapped Female Pipe | Vanderhoof Hardware Company Inc.
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