Remove burrs, rust, dust, removing the oxide layer.Coating, can improve the quality of metal stone,economy, high efficiency.for different angles of wood, metal materials, etc.polishing and grinding all kinds of rough surface.Material:stainless steelColor:golden,silverApplication: suitable for metal surface polishing, rust etc.Diameter:3mmPen type Size:6mmmm * 50mmFlat type Size:25mmmm * 40mmBowl typeSize:15mm*50mmDoes not rust, durable, long service life.Package include:6 x Pen type Polishing wheel brush(gold)6 x Pen type Polishing wheel brush(silver)6 x Flat type Polishing wheel brush(gold)6 x Flat type Polishing wheel brush(silver)6 x Bowl type Polishing wheel brush(gold)6 x Bowl type Polishing wheel brush(silver)Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.