Material: Made of high quality PVC material, the kayak fin is durable for long service life. The integral fin is a great accessory for kayaks, canoes and rowing boats. It can improve the stability and directionality of the surf pole. High strength, low weight, high impact resistance, high heat resistance. Suitable for a variety of inflatable surfboards. Auxiliary Guide Small Tail Fin, Tracking Fin Detachable Water Splitter Fin for Canoe Boat Surfboard Kayak Inflatable Boat-Black Product Describle: 1.Material: Made of high quality PVC material, the kayak fin is durable for long service life. 2.The integral fin is a great accessory for kayaks, canoes and rowing boats. 3.It can improve the stability and directionality of the surf pole. Feature: 1.The tracking fin is designed to divide water and decrease its 2.Glue it to both sides of the surface of the board to aid in the use of a central water connection. 3.The manifold of the seat plate is glued to the rear end of the back of the plate. 4.It is easy to attach and to remove without any tools, which is also convenient to carry. 5.Suitable for a variety of inflatable surfboards. Specifications: Material: PVC Color: Black Size: Approx. 21 * 6.5*6.4 cm / 8.3 * 2.56*2.52 inch Weight: Approx. 100g Package Included: 1 * Kayak Fin Note: Please allow a little size error due to manual measurement.