Features and Benefits: Brass coated carbon steel brushes for scraping rust, paint, dirt and grime; Made of carbon steel crimped wire to prevent wires from breaking loose during aggressive use; 1/4 in. quick change hex shank fits most drills and die grinders; Set Includes: (1) 2 in. Cup Brush, (2) 1-1/2 in. Circular Brush, (1) 2 in. Circular Brush, (1) 2-1/2 in. Circular Brush, (1) 3 in. Circular Brush;