XIANQI Premium materialThis surfboard SUP fin is made of nylon plastic, with smooth and delicate surface treatment, which can be stably fixed on the surfboard. And the material has good wear resistance and impact resistance, and good water breaking. New designOur surfboard fin has unique shape, the upper end is shaped like a fin, and the streamlined appearance conforms to the physical principles of water sports, which effectively improves the flexibility of the surfboard and improves its turning performance, can help you paddle safely. Easy to useOur surfboard fins has an insert snap-in safety reinforcement buckle. You can first glue the fin base to the rear end of the surfboard, so that you can install sup fin on the water ski base. If you do not need the sup fin in the future, slide the SUP fin buckle to remove it. A safer paddling experienceOur surfboard fins are used to increase the stability and balance of the surfboard, effectively reducing the impact of the reef when paddling. It is especially suitable to be installed on the beginners surfboard to help you stabilize the paddling. ApplicationSuitable for any surfboard with general or American fin box, and can also be used as a SUP fin replacement, surfboard repair kit, paddleboards, inflatable SUP boardinflatable paddle board, stand up paddle board or canoe paddle. It is very suitable for surfers who like to turn. Specification Material: Plastic Size: Approx.21.5x18x3.5cm Color: Black Package Includes: 1x Surfboard Fins