Overview-FCS II HS Shaper Fin designed by Hayden Cox from Hayden Shapes.-Perfectly suited to the HS Hypto Krypto and other higher volume board models with lower rocker.-This fin produces exceptional speed when driving off the bottom, especially on longer open face waves.--Ideal Conditions-A wide range of conditions, and waves.--Board Types-Designed to fit the FCS II Fin System.-Perfectly suited to the HS Hypto Krypto and other higher volume board models with lower rocker--Fin Family-Reactor: Find Speed. Speed, tight turns & snaps.