This is a very good product for the money and I am very happy with my purchase. Please do not be discouraged that the metals are not marked. You can easily determine this for yourself using the following method: Copper is the metal that is most easily identified due to its color. Aluminum is the lightest of all metals and is very malleable. Lead is the heaviest of the metals and very flexible. Graphite is a thick, lighter piece encased in plastic. It is not like other details and definitely unique. Only strips of iron and zinc remain. Take a magnet from your fridge and whoever is attracted to it will be iron. Zinc is not magnetized, so it is final. Hope that helps. 😉
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