NT solid blade for heavy-duty utility knives with no snap-off lines. Solid blades are especially used in the food processing factories or any manufacturing factories where extra precautions must be taken to prevent blade from chipping and accidentally mixing into the product. These professional blades are made of high quality carbon tool steel and produced through multiple stages of precise process to obtain the ultimate sharpness and optimum edge-retention. 300 carbon steel blades are bulk packed for industrial use. Made in Japan.