Check the listing for details. FCS II MR 78 PG Twin Fin in Dark Sunset New Surfboard Fins. Condition: New. Listed at 125.00 USD. LIMITED EDITION This is MR’s original retro twin template, intended to be used without a stabilizer for maximum drive and pivot. Overview The Limited Edition FCS II MR ’78 takes us back to a time when Mark was revolutionizing the way surfers approached the wave, and how they maneuvered their boards. Mark Richard's famous twin template produces exceptional drive and speed. Board Types Designed to fit the FCS II Fin System. Recommended for all board types including fish, funboard and twin fin boards. Extra Large New Sizing for Specialty Fins You may notice new size ratings for our Specialty Fin Range. Previously, all Specialty Series fins were rated an XL. To better reflect fin sizing, we now have 3 new size categories: S-M, M-L, and L-XL. Fin Base (inches) Base (mm) Depth (inches) Depth (mm) Area (inches) Area (mm) Sweep Deg° Foil L-XL 5.19 131.8 6.05 153.6 22.99 14830 29.3° TBA