Quick view Stray Boards SB Series "Twin" Fin Set - New - Futures Compatible Twin Fins - Matte Black ABOUT OUR SB TWIN: The SB TWIN is both yin and yang, offering the perfect balance of speed and drive found in traditional keels with the responsiveness and pivot of a more upright template. The SB TWIN is designed to work equally well in your short fish... Now: $59.99 MSRP: $80.00 Was: Add to Cart