When designing a good fillet knife there is no room for mediocrity. Razor sharpness, a flexible blade and a non-slip grip are mandatory for any serious fisherman. Stream, lake and deep-sea fishermen alike will find that Buck's fishing knives are the perfect tool.The Ulti-Mate stream is the smallest at 4 1/4" blade and 9 3/4" overall, the Ulti-Mate Lake has a 6 1/2" blade and is 11 3/4" overall and the Ulti-Mate Ocean has an 83/4" blade and is 14 1/4" overall. All have Kraton handles and come with plastic sheaths with drain holes.