Circular blades are cutting tools shaped like discs, commonly used in various applications such as woodworking, metalworking, and manufacturing. They feature sharp edges around their circumference, allowing them to slice through materials efficiently. These blades can be found in tools like saws and shears, and they come in different sizes and materials depending on their intended use. The design of circular blades enables smooth and precise cuts, making them essential in industries that require accuracy. They can be powered by machines or operated manually, and their effectiveness is influenced by factors such as blade material, tooth design, and rotation speed.