X-Acto knives are precision cutting tools commonly used in arts, crafts, and various professional fields. They feature a sharp, replaceable blade that allows for intricate cutting and detailing on materials like paper, cardboard, and plastic. The handle is typically made of metal or plastic, providing a comfortable grip for extended use. These knives are popular among artists, designers, and hobbyists due to their versatility and accuracy. They come in various sizes and blade types, making them suitable for different tasks, from simple cutting to complex designs. Proper safety precautions should be taken when using them to prevent injuries.