DIYSELF 4 Pack Box Cutters, Utility Knife with 10 Pcs Blades, Box Cutter Heavy Duty for Carpet, Cardboard, Vinyl, and Paper, Sharp Razor Knife, Package Opener, Box Cutter Retractable, Box Cutter Knife - DIY-JS802

• What you will receive: 4 utility knives and 10 box cutter blades, and these retractable box cutters are available in four different colors: red, black, yellow, and blue. What materials did we use: The box cutter knives feature a sturdy aluminum body for durability and long-lasting quality. The blades are made of SK5 steel, ensuring its sharpness. How can you change blades: For safety reasons, the blades of the box cutter knife are secured by a screw. To change the blade, use a screwdriver to release it and replace it with a new sharp blade. What you can use it for: Our razor knife set can be used for a variety of materials, including cardboard, paper, plastic, foam, carpet, and leather. It's versatile enough to be used for work, DIY projects, and everyday tasks. If you have any questions: Our customer service team is available to assist you with any questions or concerns you may have. We are committed to providing you with the best possible experience and continuously improving our products and services.