Captain Fin Mikey February TWIN Keel / Captain Fin Mikey February Twin Fin Keel This is the template for the TWIN keel fins designed by him. It can be used for a wide range of boards, from performance-type twin fin surfboards to retro FISH boards. Recommended for surfers who like Mikey's free and original lines. ●Fins Size ・height : 5.35"(13.58cm) ・base : 6.2"(15.7cm) ・Area : 25.99"(66) ・foil : Flat Fin System/Fin Box: FUTURE Number of Fins: Twin Fin Please refrain from bidding if you are concerned about details. No returns or exchanges. Thank you for viewing.