Craft knives are versatile cutting tools commonly used in arts and crafts. They feature a sharp, replaceable blade that allows for precise cuts on various materials, such as paper, cardboard, and thin plastic. These knives are essential for tasks like model making, scrapbooking, and detailed artwork. Typically, craft knives have a comfortable grip and a safety cap for storage. Some popular brands include X-Acto and Olfa, which offer different blade types for specific cutting needs. Proper handling and safety precautions are important to prevent accidents while using these tools.