Gamakatsu SL12S The SL12S hooks from Gamakatsu are predestined saltwater hooks for fishing for large fish, which were originally developed for big game fishing. Nevertheless, they are also suitable as fly hooks for hunting large predatory fish thanks to their sharpness and the wide hook bend, while bent hooks are now a thing of the past. Care was taken to use the best materials during production and to ensure that there are no impurities in the material. This prevents the hook from breaking.