Amazon.com : Lifynste 2 Pack 3/4" Heavy Duty Brass Garden Hose Adapter with Dual Swivel for Male Hose to Male Hose, Double Female : Patio, Lawn & Garden
Amazon.com: LitOrange (2 Pack Lead-Free Brass Garden Hose Threaded 3/4" GHT to 1/2 NPT Fitting Connect, Green Thumb Quick Swivel Connector Adapter,Double Female Thread 3/4" x 1/2" NPT Pipe : Patio, Lawn
Melnor Metal Double Female Adapter 59Z FB-HD - The Home Depot