Grainger offers fixed blade knives for rough cutting operations. Shop for stainless steel or carbon steel blade knives. We have the best knives to carry out a range of cutting projects including penetrating the skin of a fuselage, cutting a seat belt, firewood, windows and more. Some of our knives have built-in sharpeners for long-time use. Shop for serrated, curved, straight and fine blades. Besides the blades, we also have impressive sheaths for easy welding.