The Radnor Wire Wheel is a 4-inch twisted wire brush with a 0.020-inch wire diameter and a 5/8-inch arbor hole for easy mounting on a grinder. This high-quality wire wheel is designed for removing rust, paint, and burrs from a variety of surfaces, making it an essential tool for metalworking and fabrication projects. With its durable construction and efficient performance, the Radnor Wire Wheel is a reliable choice for professionals in various industries.