60ml of a Water based compound to blacken Brass, Nickel Silver, steel, solder, lead & copper. As it is water based surfaces must be clean as any oil will disperse the water. Apply with a small brush. (On steel when fully blackened, dry, and wipe with an oily rag to stop the risk of rust. Can be used, not as a primer but to reveal black if paint comes of edges of a model.

As this is a BANNED substance by the POST OFFICE it will be delivered by courier (at no extra cost) but may take 3 - 5 days