ToughBuilt Utility Knife Blades keep your utility knife working optimally throughout the most rigorous jobs. Made from durable, precision-honed carbon steel to provide long-lasting use. The straightedge blades deliver precise and accurate cuts on a variety of materials including carpet, cardboard, drywall, leather, rubber, vinyl flooring and more. Made for all ToughBuilt utility knives and upgrade standard utility knife blades, these blades are built to meet the pros rigorous demands. WARNING : This product can expose you to chemicals,including leads and phthalates , which are known to the state of California to cause cancer and birth defects or other reproductive harm. For more information go to : www.P65Warnings.ca.gov -