Detachable Single Fin for Longboard Surfboard Paddleboard

This black fin is made of fiberglass-reinforced nylon composite material to make sure the fin is strong and durable. So you can use it for a long time. It can provide good hold in both flat water paddling and turning around. It fits almost all sups and longboards with "universal" or "us style" fin boxes, Makeing it convenient for you to replace the original fin quickly.