Central surfboard fin with screws, for surfing, paddle board on stand, kayak, surfboard fins Longboard removable HIGH QUALITY: This SUP fin is made of high quality nylon material with a smooth and delicate surface that can be firmly attached to the surfboard. It has good wear and impact resistance, prevents aging, anti-corrosion, strong and durable. Fluid appearance: The shape of the surfboard fins resembles the dorsal fin of a fish, which disperses the resistance of water flow well and helps maintain the balance of the surfboard. With deflectors, your surfboard can become faster and more stable. Easy to install: insert the ribs into the base, then insert the pegs to complete the installation. You can tighten the screws directly by hand, without using a screwdriver, so that the surfboard can be easily disassembled and moved. WIDE APPLICATION - Fits any surfboard with American style fin box, can also be used as a replacement for SUP fin. Suitable for longboards, surfboards and standing or kayak paddles. If you want to practice and enjoy water sports, our surfboard fins are perfect. Safety: streamlined design, excellent turning and aiming properties ensure safer, more comfortable and more enjoyable boating. -Portability: The surf fins come with screws that can be installed manually, are easy to carry and lightweight, so you can go out to play with ease. The best thing about our universal surfboard fins with screws is that they are suitable for surfers of all levels. parameter: Material: plastic stainless steel List of things to pack; SUP large fin*1 Screw * 2