Drill Wire Brush set - Production process upgrade - Made of curled, untempered 0.010" carbon steel - Upgraded from 60A carbon steel to 72A carbon steel - Increased number and thickness by 1-1.5x - Securely fastened to a cup-shaped metal holder that will not lose or bend during intense use - Stronger 1/4" hex shank - 1/4" (6.35 mm) hex shank provides better stability and strength than a regular 6 mm round shank - Less likely to loosen during operation - Designed to withstand speeds up to 4500 RPM - More robust wire brush for drill - Standard 1/4" hex shank is compatible with most drill tools, including regular power drills and pneumatic air drills - Cup brush construction maintains balance; long-term use remains symmetrical and undistorted - Wide application - Suitable for removing rust, finishing weld seams, and polishing metal surfaces - Also useful for surface treatment of metals, paint peeling, and grinding - Highly practical for industrial DIY projects - Use scenarios - Scenario 1: remove rust and prep metal surfaces before painting on automotive or machinery projects - Scenario 2: finish weld seams and deburr metal parts after fabrication - Scenario 3: polish wood surfaces and strip old paint during furniture restoration Specifications and compatibility - Material: curled, untempered 0.010" carbon steel - Carbon steel grade: upgraded from 60A to 72A - Shank: 1/4" (6.35 mm) hex - Maximum operating speed: 4500 RPM - Holder: cup-shaped metal holder designed for durability during intense use This description preserves the original product brand, specifications, models, and functions while presenting clear, concise benefits and practical use cases.