Steel wool is a bundle of fine steel fibers that is commonly used for cleaning and polishing surfaces. It is effective at removing rust, paint, and grime from various materials, including wood and metal. Steel wool comes in different grades, ranging from coarse to fine, allowing users to choose the right type for their specific cleaning task. In addition to cleaning, steel wool can also be used in crafts and DIY projects. It can be shaped and molded for artistic purposes or used as a fire starter due to its flammable properties. However, caution is advised when handling steel wool, as it can create sharp edges and may cause injury.