Faucet to hose adapter,  Thread, 55/64 Inch x 27, 15/16 x 27, Male Hose

These usually work on a SINK. 

• Chrome plated brass
• Aerator X hose adapter
• 55/64 Inch - 27 female X 15/16 Inch -27 male thread x 3/4 Inch male hose thread
• Used to adapt various aerator threads
• Lead free product, meets California AB-1953, Vermont, and new federal standards for low lead applications