Rusted MetalDont give up!The shine is restored.Even stainless steel will lose its shine and dull over time, but it can be recovered. Bring back the shine of your bicycle rims, saddle posts, car wheels, engine cam covers, scarves, bike handles, mufflers, aluminum steps, stainless steel sinks, knives, bowls, accessories, tiles, washbasins, metal buckle of watches, natural stones, golf iron heads and more.(This coarse buffer is not ideal for a mirror finish.The mirror finish stage is a beautiful mirror finish if you use the fine buffs we sell from our company.A fine buff in front and coarse in the back.If you attempt to finish the mirror with only coarse buffs, it is definitely a coarse bristles that make polishing streaks.