This hex swivel is from T&S Brass. It is for use with pre-rinse hoses and spray handles. It has a 7/8-20 UN female outlet and 7/8-20 UN male inlet. Fits all T&S spray valve handles. T&S Brass part number 018200-40.
EC Part Number: #86628
Manufacturer Number: 018200-40
Manufacturer: T&S Brass and Bronze Works