Surf Fin 9"/ 8"/ 7.5" - Fiberglass Reinforced Nylon - Center Fin for for Longboard Surfboard SUP (black-10)

["Compatibility: Suitable for any SUP or surfboard with standard 7.5\" 8\" 9\" 10\" fin box, suitable for longboard/surfboard/stand-up paddle","Material: made of glass filled nylon (glass fiber reinforced)","Design：Singles Fin is specially designed for the center fins of longboards and paddleboards. It is simple to set up and can be quickly removed and connected.","Tool-free fin screw: You can install it on the board without additional tools, and comes with a free screw"]