- Enhanced Production Process: Our Drill Wire Brushes are crafted from upgraded 72A carbon steel, significantly stronger than the previous 60A. With increased thickness (1-1.5 times), the bristles are securely fastened to a specially designed cup-shaped metal holder to prevent bending or loosening during heavy use. - Robust 1/4” Hex Shank: The 1/4" (6.35mm) hex shank offers superior stability and strength compared to standard 6mm round shanks, ensuring a secure fit that won't detach easily. This wire brush drill set is designed to endure high-speed operations of up to 4500 RPM. - Durable and Versatile Compatibility: The standard 1/4" hex shank is compatible with most drill tools, including both standard power drills and pneumatic air drills. The cup brush maintains its shape and performance over long-term use, resisting asymmetry and distortion. - Wide Range of Applications: Ideal for removing rust, finishing weld seams, and polishing wood, our drill wire brush set is perfect for various surface treatments of metals. It is also effective for paint removal and grinding tasks, making it a highly practical tool for industrial and DIY projects. - Key Benefits: - Upgraded material ensures longer-lasting performance. - Secure metal holder design prevents loss and bending. - Compatible with a variety of drill types for versatile usage.