FCS II ROB MACHADO PG LARGE TRI FINFCS II ROB MACHADO PG LARGE TRI FIN Designed by Rob in conjunction with his Firewire glazer model. High performance keel fin. Low aspect ratio provides the fast and loose feel. Side fin more upright for speed. Centre fin more sweep for control. Board Types Designed to fit the FCS II Fin System. Recommended for all board types including fish, funboard, hybrid and keel fin boards.