For Catch Surf Surfboards with the Hi-Perf Fin Box The Catch Surf Hi-Perf Safety Edgy Quad Fins offer a safer fin option to turn your Odysea Skipper or Stump Quad into a shore-breaking machine! Stiffer inner core with soft rubber edge. Includes four 4.5" safety fins, fin key and Catch Surf sticker. Developed by Catch Surf in California, U.S.A. FeaturesFour safety fins with soft edges Stiff core for hold in the wave Compatible with Odysea Stump Quad and Skipper