Aluminum 4" Female Camlock Fitting x 4" Male Pipe Thread
4" to 3" Female Quick Couple Camlock to Male Quick Couple Reducer | Moro USA, Inc.
Amazon.com: Quafwia 1 pc Aluminum 4 inch camlock Fittings Type E Cam & Groove Hose Fittings, 4 inch cam Lock Fittings Male Adapter x 4 inch Hose Shank cam Lock Fittings 4