upgraded Sevylor Fin, Spare, Red Fin, Kayak, Canoe, Paddleboard, Skeg Fitments: For all of theSevylor Rangethat have integral fixing points on the hull Colorado, Hudson, Adventure, Reef, Rio, Madison, Waterton etc. etc. Also suitable forZ Protango range of kayaks and many others Tracking fin fit for most kayak boats Designed for simple install and mounting Help reduce water resistance, keep your kayak going straight, much improve tracking High quality PVC, strong, durable and sturdy Lightweight, portable, easy to carry Specification: Material: PVC Size (L x H): Approx. 15 x 10cm 5.91 x 3.94in Color: Black Package Includes: 1 Piece Kayak Skeg with base Note: Please check and confirm the size can fit for your kayak skeg, and allow 1-2mm size deviation.