A utility knife is a versatile cutting tool commonly used in various tasks, from crafting to construction. It typically features a retractable blade that can be extended or retracted for safety and convenience. The blades are often replaceable, allowing users to switch them out when they become dull. These knives are designed for precision and control, making them ideal for cutting materials like cardboard, plastic, and even thin wood. Many utility knives also have ergonomic handles for a comfortable grip, enhancing usability during extended periods of work. They are essential tools in both professional and DIY settings.