Check the listing for details. 20 Pc. Tube Brush Set 8320 ATD Wire Wheels & Brushes. Condition: New, Made in CN. Listed at 35.06 USD. 20 Pc. Tube Brush Set Perfect for cleaning internal surfaces such as threaded holes or tubes. For use manually or with power drill/driver. Includes (6) brush sizes each in stainless steel, brass and nylon bristles for different jobs. All brushes have 1/4 hex shaped quick-disconnect shanks for easy and quick changes. Set Includes:. (1) 1/4 quick-disconnect soft grip manual driver handle. (1) 1/4 quick-disconnect 6 extension adapter for manual driver or power drill/driver. (6) Stainless steel bristle twisted wire tube brushes 1/4, 3/8, 1/2, 5/8, 3/4 & 1 diameters. (6) Brass bristle twisted wire tube brushes 1/4, 3/8, 1/2, 5/8, 3/4 & 1 diameters. (6) Nylon bristle twisted wire tube brushes 1/4, 3/8, 1/2, 5/8, 3/4 & 1 diameters 8320.