SERVICE AND DURABILITY: Each knife opener is made of high-quality materials, including fiberglass, nylon, and stainless steel, both known for their good durability and wear resistance, which extends the knife's lifespan and ensures reliable service for a long time; long term. Widely used in daily life: Each safety knife measures approximately 5.8 x 1.5 inches. This compact size makes the knife perfect for a variety of daily tasks such as opening packages or cutting tape, craft projects, DIY activities, and more. Practical hidden blade design: These unpacking tools feature a practical hidden blade design for protection, meaning the blades are hidden when not in use, greatly reducing the risk of accidental injury and saving time and effort in manufacturing. Satisfying practical use for various occasions: Its black color ensures the safety knife's professional and elegant appearance, suitable for various occasions, you can use this safety tool with confidence at home, in the office, in warehouses, etc.