Razor-Back 21.5 In. Razor Back Machete Knife. This versatile tool is perfect for cutting heavy brush and harvesting corn and other vegetables. It features a 15 In. tempered high carbon steel blade that is designed for durability and sharpness. The 6-1/2 In. hardwood handle provides a comfortable grip, and the overall length of the knife is 21-1/2 In. The blade is lacquered for added protection against rust and corrosion.