The Rapala Replacement Blade for Rapala Electric Fillet Knives will give your knife the boost it needs to fillet fish quickly and efficiently. Designed to fit all Rapala electric fillet knives, this corrosion-resistant Replacement Blade features serrated edges, which makes filleting fish fast and effortless. Tough skin and bones are no problem for this replacement blade. Fits all Rapala electric fillet knives Stainless steel, serrated blade Installs in seconds