Tungsten carbide car weight.
Small (1" square) weight made of tungsten carbide and meant to be used in Pinewood Derby (model) race cars. I'm not clear on whether that would be considered cheating or not.
Source: eBay seller dlafew
Contributor: Theodore Gray
Acquired: 2 April, 2009
Text Updated: 7 April, 2009
Price: $10
Size: 1"
Purity: 90%
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