Mr Twister MT-1208 SW Piranha Knife is a pioneer in electric fish cleaning technology. This bad to the bone white and blue fillet knife has a 9 inch heavy duty stainless steel blade. This takes you less time cleaning your catches of the day, so you can have more time fishing your catches day of . The Mister Twister MT-1208 Piranha Knife features 25% more torque and 15% more speed than most other electric knives. It is just as rugged as the classic Mister Twister Electric Fisherman, so you know it will be able to handle the tough scales and skin of your trophy fish. Please keep in mind this more powerful speedy electric knife is a cored electric knife not a battery operated knife.