ITEM NAME:Free No Tool Fin Screw -Single Fin 10inch Description: Universal 10 inch surfing center fins suits most SUPS, Long Boards, Paddleboard and etc. Made of  qualified nylon with carbon fiber texture makes it look great Lightweight, reinforced, no installation tools, can be mounted directly to the surfboard Offers great hold grip in both flat water paddling and for turns and noseriding Compitable with F.C.S Fin Box Specification: Material: PVC Plastic Color:Black Size: 10 Inch Package Includes: 1 Piece Surfing Center Fin Note: Please allow slightly difference due to manual measurement. SKU: DMO0018322654042193.Compitable with F.C.S Fin Box. 1 Piece Surfing Center Fin. Made of qualified nylon with carbon fiber texture makes it look great. Lightweight, reinforced, no installation tools, can be mounted directly to the surfboard.