Perfect twin fin for any retro-style board. Designed to fit the FCS II Fin System. Recommended for all board types including fish, funboard and twin fin boards. Designed in collaboration with the world's leading surf athletes and surfboard shapers, the FCS range offers a diverse range of surfboard accesories suited to a variety of board models, wave conditions and surfing styles. FCS fins are the preferred choice by the world’s best surfers and shapers. Mark Richard's popular 4 x World Title twin template. Highly upright twin, making for an ultra loose feel with fast release.