Forney 72732 Wire Cup Brush, Fine Crimped with 1/4-Inch Hex Shank, 3-Inch-by-.008-Inch Adds Extra shine to your product Crimped wire cup brush, fine, 1/4Hex shank, Manufactured in China Designed for easy access into narrow holes and confined areas Crimped style for light to medium duty applications Removes rust, scale and paint in hard to reach areas 1/4-Inch (6.35-mm) hex shank Works with any power drill or pneumatic air drill