12 pack of stainless steel grub screws for FCS fin boxes.
WARNING: do not use fake screws or screws from other brand, because these have different lengths and/or thicknesses which might damage you fins or fin plug.
Buy FCS Stainless steel screws (pack of 12) - Longboards, Funboards, Fins & Surf Leashes @Billy.be: Your Expert in Watersports