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A 16.5+g sample of Tungsten metal in the form of a machined rod. Purity is 99.95%. These high purity rods make for a very attractive sample of Tungsten metal and fit perfectly inside the supplied 1 dram vial for display. They are very heavy for such a small size, a perfect example of the high density of pure Tungsten metal! You'll get one rod measuring about 5mm in diameter and 30mm long.