FCS II Modern Keel PG Clear Twin Fin Set - Medium/Large / MangoThe FCS II Modern Keel PG Twin Fins is designed for traditional fish shapes. Overview: Upright keel template designed for traditional fish shapes. Lower sweep (rake) than most conventional, wider based keels which allows it to pivot in a really tight radius. High area and depth not only delivers a feeling of control when pushed harder on the open face, but helps to maintain tremendous speed through roundhouse cutbacks. Board Types: Designed to fit the