Features: 1. Experience in safety and performance with our flexible plastic safety stabilizer fins - perfect for river and surf. Our affordable fins are designed to reduce injury to your board, yourself and others, while still delivering top-notch performance. 2. Compatible with all surfboards with 2 wing fins - if not sure, please contact us to confirm. Universal '2-flap box' for any brand, for hassle-free installation. 3. There are three colors for you to choose to meet your needs. There are 2 tail fins in the package. 4. Our tail fins are perfect for surfers and advanced surf riders. Whether you're tackling tipping shore breaks, shallow reefs or rivers, our tail fins will help you stay safe and perform your best 5. Our fins are compatible with fin flat head screws (not included), which can be used to lock the fins tightly when surfing or hitting advanced white water. Use the fin keys to adjust your fin settings on the fly and enjoy the peace of mind knowing you're using a safer alternative to larger fiberglass or carbon fins. Specification: *Material：High quality nylon plastic + 30% glass fiber reinforced *Specification：2pcs *Color：Black，Light yellow，White *Size: As shown Package Contents： 2pcs Surfboard fins Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.