• nylon
• Surfboard shark-fin:increase the stability and direction of the surf bar,Surfboard Tail Rudder
• Boat tail rudder:used for all kinds of inflatable surfboards,Surfboard Shark-fin
• Surfboard tail rudder:the water splitter of the seat board is glued to the back end of the reverse side of the board,Surfboard Shark-fin
• Inflatable boat tail rudder:made from nylon material for durable long time use,Surfboard Shark-fin
• Boat shark-fin:it is glued to both sides of the plate surface to assist the use of the central water splice,Surfboard Shark-fin