Wishlist FCS FCS PC-5 Medium | Tri-Quad Fin Set | Performance Core | Twin Tab | All Round Performance $209.95 FCS PC-5 Medium | Tri-Quad Fin Set | Performance Core | Twin Tab | All Round Performance Core Series Surfboard Fins FCS twin tab PC-5 tri-quad medium surfboard fins. The PC template is a neutral, all rounder, features inside foil technology and... Choose Options Compare