*This purchase includes the center fin only; side fins are not included. It looks great, works great, and the material is durable. I tend to be very careful with my fins, so it should last as long as I paddle Its larger size is tailored for single-fin longboards, while the smaller and medium sizes complement mid-length and performance single-fin setups, as well as 2+1 configurations. Surf 7/8/9/10.25 Inch Fin Fibreglass Surfboard 7/8/9/10.25/11 Length Black Color Fin In Surfing Volan Flex Center Fin Newest Longboard Fins Fiberglass Surfboard Single Fins - Newest Longboard Fins And Fiberglass Single Fin For Longboard And Midlength Compatible not only with nanazero surfboards but also with surfboards featuring a common center fin box. nanazero Fiberglass Center fin All Round 7"/8"/9"/10 · Fiberglass Center fin All Round 7"/8"/9"/10" - Surfboard Single Center fins, Longboard, Midlength They are highly recommended for surfers seeking versatility to handle diverse conditions with a single fin. Choose the appropriate size to suit your specific needs.