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3D3DBeryllium-copper gas wrench.
This is, I'm pretty sure, a wrench designed to operate various valves on natural gas equipment. As such it makes sense that it is made of non-sparking beryllium-copper alloy.
Source: eBay seller 69chuck69auctioneer
Contributor: Theodore Gray
Acquired: 16 April, 2009
Text Updated: 17 April, 2009
Price: $30
Size: 12"
Purity: <5%