Crimped wire cup brushes provide greater flexibility, conform better on irregular surfaces and are less aggressive than knot wire cup brushes. Crimped wire cup brushes are commonly used for cleaning/deburring and surface preparation. Cup brushes are the best choice for working on large surface.
Knot wire cup brushes are less flexible and more aggressive than crimped wire cup brushes. Knot wire cup brushes are commonly used for rust/oxide removal, coating removal and weld cleaning. Knot wire cup brushes also work great on applications requiring high impact. Cup brushes are the best choice for working on large surface.