Item Type: Paddle Board Fins ReplacementMaterial: Glass fiber, PVC 1DURABLE PVC SURF FINS: Made of good quality PVC material, which is durable, wear resistant, and can be used for a long time 2DOUBLE FINS DESIGN: This pair of fins are on both sides of the tail of surfboard, making the surfboard more stable 3RELIABLE WINDSURFING FINS: The unique design of the fins increases directionality and stability, giving your surfboard the flexibility to handle various conditions at sea, very practical 4CONVENIENT INSTALLATION AND OPERATION: The design is simple, the flexibility is good, the installation and operation are convenient, and the use is very easy 5WIDE APPLICATIONS: Two tail fins set is suitable for all kinds of inflatable surfboards, such as longboards, surfboards and stand up paddleboards