Center fin. Please see the images for the condition. One was dropped, so it's being sold separately. Size L. 【High-Performance Fins】 FCS REACTOR and AirCore surfboard fins use carbon fiber material, boasting both light weight and high strength. This maximizes performance during surfing. 【Design】 The streamlined design reduces wave resistance and enables smooth turns. The REACTOR model, in particular, is designed for speed and agility. 【Compatibility】 These fins can be attached to various surfboards, offering high customizability. You can choose them according to your surfing style. - Brand: FCS - Model: REACTOR - Material: Carbon Fiber - Brand: AirCore - Material: Carbon Fiber 【Note】 Please refrain from purchasing if you are sensitive to used items or if you are expecting a new item. Returns and refunds are not accepted, so please understand this before purchasing. Please be aware that used cardboard boxes may be used for packaging due to amateur packing. Fin System/Fin Box: FCS2 Type: Fins Number of Fins: Tri-fin Number of Fins: Tri-fin Fin System/Fin Box: FCS2 Type: Center Fin Type: Fins