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3D3DWick holders.
I wasn't exactly sure what a "wick holder" was, but it was described as something used on large aircraft and made out of titanium: That's good enough for me, and the price was right. I think they hold some kind of wire that dissipates static electricity on the trailing edge of a wing.
Source: eBay seller getnick
Contributor: Theodore Gray
Acquired: 27 February, 2003
Text Updated: 16 March, 2009
Price: $13/10
Size: 3"
Purity: >90%