Fins by Dolsey are available as sets, or single fin replacements.
Dolsey stocks several sizes of center box fins, rigid or flex fins for performance surfing and paddling, and screw thru sets for softys. 
Dolsey fin sets are stocked in Bahne, Futures, FCS or screw thru. 
3" to 5" side sets, 5" thruster sets, or 3" - 5"quad sets.
Center fins 5 to 10" - Rigid or flexible materials.
Other fin items- Set screws , Center screw and plate sets 
 
Wholesale bulk - 800 969 7473 
 
Dolsey for your SUP or surfboard fin needs.