NVS Ono Apex Series Keel Double Tab Twin Fin SetThe NVS Ono Apex Series Keel FCS II Compatible Twin Fin Set draws from the vision of legendary folks like Steve Lis and Larry Gephart. Its a well balanced keel template; designed for fluid, stylish surfing. The Ono twins feature our proprietary SeriesIII foiling which provides more effortless speed down the line and smoother rail to rail transitions. The Ono Keels will complement most any fish or fish hybrid outline. Theyre a relatively small keel