FCS II Performance PC Tri Fin Set. Fin Set Up: Thruster. Fin System: FCS II. Construction: Performance Core Carbon. Reliable all-round fin for a diverse range of surfers conditions and board types. Well proportioned template with Inside Foil Technology (IFT) delivering a balance of drive pivot and hold. Designed for surfers wanting a combination of speed and maneuverability with flow between turns. Ideal conditions: A wide range of conditions from beach breaks to point breaks. Recommended for all board types. 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. Vendor style #: FPERPC02TSR. Fin Specs: Size: Small. Rider's Weight: up to (55 - 70Kg / 120 - 155 Lbs). Base: 4.25 / 108mm. Depth: 4.43" / 112mm. Area: 14.03" Sq / 9054mm sq. Foil: Inside. Sweep: 33.7 Degrees. Size: Medium. Rider's Weight: up to (65 - 80Kg / 145 - 175 Lbs). Base: 4.37" / 111mm. Depth: 4.55" / 115mm. Area: 14.81"sq / 9554mm sq. Foil: Inside. Sweep: 33.7 Degrees. Size: Large. Rider's Weight: up to (75 - 90Kg / 165 - 200 Lbs). Base: 4.48" / 114mm. Depth: 4.67" / 118mm. Area: 15.58"sq / 10054mm sq. Foil: Inside. Sweep: 33.7 Degrees."