Heavy-duty blades are designed to cut through medium-density materials while maintaining an exceptional level of precision. The medium-weight, No. 2 blade features a considerably fine point for a cardboard knife, making this an extremely versatile cutting tool. Use with a variety of materials, including cardboard, plastic, most papers, hard & soft wood, rubber, foam, vinyl, & more. Knife blades are crafted with sharpened carbon steel for a reliable cut & a strong blade