Rotary shears are cutting tools designed for slicing through various materials, including paper, fabric, and thin metal. They feature a circular blade that rotates as it cuts, allowing for smooth and precise cuts. This design makes them particularly useful in industries like sewing and manufacturing, where accuracy is essential. These shears can be operated manually or powered by electricity, depending on the model. Some rotary shears come with adjustable blade sizes and attachments, enhancing their versatility. They are often preferred over traditional scissors for larger projects due to their efficiency and ability to handle multiple layers of material at once.