When it comes to filleting your catch, you need a sharp blade that can get the job done quickly and efficiently. That's why Smith's Sharpeners created these 420 serrated stainless steel blades. These blades are durable and textured for a better grip, making them ideal for filleting fish. Plus, they're compatible with Smith's Electric Fillet Knives (AC51207 or AC51233). So if you're looking for a top-quality fillet knife blade, look no further than Smith's Sharpeners 8in Blades.