Fitments: Compatible with Sevylor Range models that have integral fixing points on the hull, including Colorado, Hudson, Adventure, Reef, Rio, Madison, Waterton, and others. Also suitable for Z Protango range of kayaks and many similar models. Tracking fin designed for most kayak boats. Features simple installation and mounting. Helps reduce water resistance, improves tracking, and keeps your kayak moving straight. Made of high-quality PVC material, durable, strong, and sturdy. Lightweight and portable for easy transport. Specification: Material: PVC. Size (L x H): Approximately 15 x 10cm (5.91 x 3.94 inches). Color: Black. Package Includes: 1 Piece Kayak Skeg with base. Note: Please verify the size compatibility with your kayak and allow for a 1-2mm measurement deviation.