Glued polishing wheels (brushes) are made of cardboard center and fiber fibers. Fiber brushes are designed primarily for polishing metals. The fiber brush is also suitable for brushing and fine pre-polishing. Brushing with rotary fiber brushes made of natural fibers greased with abrasive pastes alters the components intended for electroplating and pre-polishing. Brushing with a fiber brush unifies the surface of complex shapes and removes the oxides produced by grinding and oxidizing the surface.