Metal blades are cutting tools made from various types of metals, such as stainless steel or carbon steel. They are commonly used in a range of applications, including kitchen knives, saws, and industrial machinery. The sharp edge of a metal blade allows for efficient cutting, slicing, or shaping of materials. These blades can vary in size, shape, and thickness, depending on their intended use. For example, a chef's knife has a broad, sharp blade for chopping food, while a hacksaw features a thin, serrated blade designed for cutting through metal or plastic. Proper maintenance, such as sharpening and cleaning, is essential for optimal performance.