- Pack Includes: Two knotted wire wheels: one 3-inch and one 4-inch, designed for versatility in various applications. - Material and Construction: Constructed from high-quality carbon steel, both the wire wheel brush and cup brush are built to last. The carbon steel wire meets strict quality specifications and supports a maximum RPM of 12,500. They are compatible with angle grinders featuring a 5/8 in 11 NC threaded shank, making it easy to tackle tough jobs like removing severe corrosion, rust, paint, spatter, and scale. Ideal for cleaning weld edges and eliminating burrs. - High Quality: Featuring 0.020-inch high-strength hardened carbon steel wire, these brushes outperform others on the market with four times the durability and superior knot integrity. - Design Features: The thick knotted cup design is perfect for aggressive surface treatment over expanded areas, ensuring effective cleaning. The thinner, curly cup design offers maximum flexibility and fatigue resistance, reducing the risk of scratching on delicate surfaces. - Practical Applications: 1. Remove rust and paint from metal surfaces in automotive restoration projects. 2. Grind and clean weld seams on heavy metal structures for a polished finish. 3. Prepare surfaces for paint or coating applications in industrial environments. This product combines durability, efficiency, and versatility for all your surface preparation needs.