Northcore fin key * Standard compatible * Hard wearing * With loophole * Northcore branding * Colour: Black A must-have kit for all surfers, the new Northcore FCS Compatible Fin Key is always useful and compatible with standard FCS fins. Used as a surfboard fin removal, this fin key is a must-have piece of kit if your surfboard has an adjustable FCS fin setup. It comes with a loophole so you can easily secure the fin key to prevent loss.