Material:This 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 Unique design:Streamlined appearance,increase the stability and balance of the surfboard,improve its turning performance,effectively reduce the impact of rocks when rowing,and improve safety.It is very suitable for surfers who like turning Easy to use:Our 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 experience:Our 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 beginnerssurfboard to help you stabilize the paddling Application:Our products included 1 SUP fin.The Surfboard Fin is suitable for various kinds of inflatable surfboards,like longboard / surfboard / stand up paddle board