A cup wire brush is a specialized abrasive tool designed for heavy-duty cleaning, surface preparation, and rust removal. Its distinctive cup shape allows for efficient cleaning on flat and irregular surfaces. The brush is composed of tough wire bristles, often made of steel or stainless steel, providing durability and effective abrasion. Cup wire brushes are commonly used with power tools such as angle grinders for tasks like weld cleaning, paint stripping, and rust or corrosion removal. They come in various sizes and wire configurations to suit different applications, offering a versatile solution for industrial and DIY projects.