Wire brush drill bit set: 12pcs brass coated wire drill brush with 1/4inch (6mm) shank, 1/4" shank hex quick-change shanks are used in all types of drills and die grinders, meet your needs Multiple sizes: 4pcs round brushes: 38, 50, 75, 100 mm, 2pcs cup brushes: 50, 75 mm, 5pcs wire end brushes: 10, 16, 20, 25, 30mm, 1pcs cone brush: 16mm Easy to use: 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 Wide application: Used to remove rust paint and weld spatter on all types of metal parts or surfaces, also grinding and surface treatment of wood and wood materials, placed in the car, garage, office and kitchen ready for use Good for use on the bench grinder, drills, cordless screwdrivers and so on, multiple sizes wire wheel brush set means you have the right wire brush for every situation The corrugated brass coated steel brushes have a round shank (6mm) and are suitable for machines of all brands The following brushes are included in this 12 pcs set: 5 pcs brush: 10, 16, 20, 25, 30mm 4 pcs: disc brushes: 38, 50, 75 and 100 mm 2 pcs cup brush: 50, 75 mm 1 pcs pointed steel wire brush: 16mm Features: Premium Wire Construction Attaches to Most Power Drills Suitable for both Mental and Wood Ideal for Cleaning and Removing Debris Robust wire brush set made of brass coated steel brushes