Upgraded Fin: Introducing our upgraded paddle board fin, crafted from high-strength PA66 material combined with 30% fiberglass for enhanced durability. We've refined our production process to provide a sleek, matte-textured surface, creating the perfect blend of endurance and aesthetics.Efficient Design: Our sup fin boasts a classic curved shape with a slightly thicker center and slender edges, offering optimal water-breaking and maneuverability. Paddleboard enthusiasts will appreciate the ease this design brings to their water adventures.Attention to Detail: We've revamped the locking strap's attachment method, eliminating worries about the fin lock coming loose. The redesigned buckle now allows for swift installation and release, making setup a breeze.Broad Compatibility: This paddleboard fin is suitable for a wide range of inflatable paddleboards, kayaks, or longboards with slide-in bases on the market. (Note: Base not included)