The 7" Blade is the same blade that comes standard on the Electric Fisherman® Knife and features an extra sharp stainless steel blade for fast & easy filleting.

The 9" Blade is the same blade that comes standard on the Piranha Knife and features an extra sharp stainless steel blade for fast & easy filleting.

All of their blades fit both the Mister Twister® Electric Fisherman® and Mister Twister® Piranha fillet knives.