These wide string hooks with a slot cut at .090 are for anything above a .048 string. Get this wider slotted hook instead of trying to use a string that has to be forced or wedged into the slot of a standard size string hook where it will eventually break.
For strings below .048 use a 9407 or 9409 standard string hook, depending on which you already have.
Fits all new and old Kahler CAM style guitar tremolos including the Flyer. Fixed Kahler guitar bridges use a two piece string hook: 8407 string hook and 8408 lever.
Changing a string hook is easy, see our guide for Installing a string hook.