• nylon
• Water separator:promotes tight arc turns while maintaining hold and driving ,longboard fin
• Nylon surfboard fin:the surfboard fins will your board's tracking, meaning less stroke changes,surfboard fin
• Water dividers:nylon material made, thickening design, this surfboard fin has a ,nylon water separator
• Tail fin:universal design is easy to install and use, and can meet your various needs,inflatable boat tail rudder
• Surfboard tail vane:unique curved streamlined design, this surfboard fin will be a assistant for your surfing,surfboard tail rudder