American Angler"s newest electric fillet knife, the PRO EFK, is our most powerful knife yet. With 2X the torque and smooth and consistent filleting, the only thing slowing this knife down is how long it takes to land your catch. This product includes 5 blades: (1) 10" Saltwater Blade, (1) 5.5" Curved Tip Blade Replacement, (1) 8" Curved Tip Blade Replacement, (1) 10" Heavy Duty Shark Blade Replacement and (1) 8" Heavy Duty Shark Blade Replacement.