Material: PVC Degrees: 5 degrees 0 degrees 5 degrees Package List 6 x Stickers 3 x Fin Box 6 x Screw 1 x Key 1Application: Surfboard fin box with key and screw, choosing the correct bevel can easily get the desired fin position. 2Stable Balance: The fin box plug minimizes the installation weight of the system to ensure the natural balance of the board. 3Shockproof: Standard design and beautiful appearance, impact resistance and strong strength, while providing a sturdy base and high performance to fully meet your surfing needs. 4Durable Structure: Fin box is made of premium PVC material, strong and durable, high reliability and long service life. 5Easy Operation: The fin box has a compact design that is simple to operate and easy to use, without the burden of carrying and storing.