The carbon gives you a stiffer fin and the performance core makes sure it's as light as possible go for the PC Carbon if you want a snappy responsive fin that is very light.OVERVIEWFast reacting fin for performing tight radius turns.Upright template with flat foil on the side fins allows for acute directional changes.Designed for surfers who like to stay tight in the pocket and perform aerial manoeuvres.IDEAL CONDITIONSSuits hollow waves and punchy beach breaks.BOARD TYPESRecommended for performance shortboards with moderate-to-low rocker.*Please Note: this fin is designed to be used exclusively with the FCS II Fin System and will not fit in the traditional FCS Dual Plug System. How Many fins?This is supplied as a set of three fins.Fin Size:FCS give each fin a size rating each size has a recommended rider weight range so you can easily work out whether a set of fins is goin :: Unisex > Surf Accessories. Ideal Conditions: Suits hollow waves and punchy beach breaksFoil: FlatSweep:31.9°Area: 14.96\² / 9650mm²Please Note: Designed to be used only with the FCS II Fin System. it will\n not fit in the traditional FCS Dual Plug SystemBase: 4.34\ / 110mmUpright template with flat foil on the side fins allows for acute directional\n changesFast reacting fin for performing tight radius turnsBoard Types: Recommended for performance shortboards with moderate-to-low\n rockerRecommended Rider Weight: 65kg - 80kgDesigned for surfers who like to stay tight in the pocket and perform aerial manoeuvresDepth: 4.57\ / 116mm Size: one size.