A utility knife is a versatile cutting tool commonly used in various tasks, such as packaging, crafting, and construction. It typically features a retractable blade that can be extended or retracted for safety and convenience. The blade is designed to be easily replaceable, allowing users to maintain sharpness without needing to buy a new knife. These knives come in different styles, including folding utility knives and fixed-blade utility knives. They are often made from durable materials like metal or plastic, ensuring longevity and reliability. A utility knife is an essential tool for both professionals and DIY enthusiasts.