FCS surfboard fins * Size: Small * Al Merrick template * Performance Core construction * Carver fins * FCS II branding * FCS II Fin System compatible * Colour: Black The FCS II AM Performance Core Small Thruster set is an Al Merrick thruster that provides exceptional drive off of the bottom, quick tail release, and all the hold you need in steeper conditions. This Performance Core (PC) fin replicates traditional glassed on or fibreglass fins, but with a significantly reduced weight. For a light and flexible fin with a stunning aesthetic, the Resin Transfer Moulding process is used.