This set includes 60 high-quality hobby knife replacement blades made from durable manganese steel, ensuring exceptional hardness, wear resistance, and long-lasting performance. Each blade is carefully manufactured through a multi-step process to prevent rust and chips, providing reliable and precise cutting tools for various projects. The blades are housed in a transparent, compact box for easy storage, safety, and portability. With a length of just 37mm, these blades are small enough to carry in pockets or small compartments, yet powerful enough to handle a wide range of materials. They are versatile and suitable for cutting delicate wood, scrapbooking materials, cardboard, paper, plastic, cloth, leather, and foam board. The coated blades resist rust, maintaining sharpness over time. This comprehensive set ensures you have reliable blades readily available for your creative and crafting needs, making it an essential addition to any toolkit.