Relentless Knives Straight Fillet Knife -The classic straight-blade fillet knife, engineered for tight, precise work around fish spines and gills. This knife excels on grouper and other bottom fish with tough, complex bone structures—giving you the control and durability you need to get every last fillet without fighting the fish. Made in the USA with premium steel and built to withstand heavy use, this is a tool that won’t quit until you do. Perpetual Edge Technology NeverRust Titanium Blade 100% aerospace grade titanium blade SlickCut Anti- Friction Treatment True Grit Glass- Reinforced Handle The handle is made of a glass reinforced ABS but covered with the same gritty material used to create the non-slip surface found adjacent to swimming pools