Manfrotto 324 5/8" Survey Adapter and Plate

I have a survey tripod to provide good stability but I’m looking for an adapter to connect this tripod 5/8-11 to the 3/8 of my Star Adventurer Pro. The adapter you are selling is the Manfrotto 324 5/8" Survey Adapter and Plate something that will accomplish this end. The survey tripod I’m using is SitePro Heavy-Duty Wood/Fiberglass Tripod STP-01-WDF20-O