evo.com | FCS Fin Accessories > Use the FCS II Tab Infill Kit if you have old-style FCS fins and want to use them with a FCS II board. These soft silicone rubber infills won't damage plugs or fins, and actually improve the performance of older FCS models. Includes 5 tab fillers, 10 screws, and 1 fin key - enough for a complete 5 fin setup. FCS Key (x1) Side Compatibility Infills (x4) Reusable Zip Lock Bag Centre Compatibly Infill (x1) Grub Screws (x10) | FCS II Tab Infill Kit 2024 - | Rubber