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
Amazon.com: Kbrotech Brass Garden Hose Adapter, 3/4”GHT Female x 1/2”NPT Female Connector,GHT to NPT Adapter Brass Fitting,Brass Garden Hose to Pipe Fittings Connect 2pcs : Patio, Lawn & Garden
Cox Hardware and Lumber - Double Female Hose Connector, 1/2 In NPT x 3/4 In NH
Gilmour - Garden Hose Connector: Male Hose to Female Pipe, 3/4″ NH x 3/4″ NPT, Brass - 18045021 - MSC Industrial Supply