An acid-based aluminium cleaner. Quick on contact and cleans deeply on all aluminium surface metals. Not a product to be played with. It is very corrosive if used in the wrong way. Used on polished aluminium - will go dull. Used on non-aluminium - will corrode. Only to be used on raw, unpolished aluminium to avoid corrosion and streaking. Do NOT handle by hand, as it will burn the skin and dry it out. Gloves must be worn. Not dilute-able, must be used neat. Used on mags, fuel tankers, aluminium rims, motorbike aluminium swing arms & frames, etc.