FCS II Mark Richards PC Twin + Stabiliser Surfboard Fins - Dusty Blue MR\'s twin + stabiliser template. Exceptional pivot off the top, while centre fin adds control. Mark Richard\'s famous twin template produces exceptional drive and speed. The small stabilizer (centre fin) adds control whilst maintaining the freedom and manoeuvrability of a twin fin set up.   Board Types Designed to fit the FCS II Fin System. Recommended for all board types including fish, funboard and twin fin boards.