FCS VS Knubster Center Keel Fin
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Designed by Sean Mattison for Von Sol surfboards, the Knubster is a center fin that can be added to any quad set-up. This fin is designed with a single tab for the ability to move it forward and back based on how much drive is desired. The Knubser fin will increase drive and provide directional control through turns without sacrificing any of the speed, flow, or the freedom of movement typically associated with a quad.