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Registered
Join Date: Jan 2002
Location: Long Beach CA, the sewer by the sea.
Posts: 37,599
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IDT the links and the pins are related.
The hooks look like something from an old style overhead garage door spring. I've seen those someplace and I've been thinking about it since yesterday.
And the more I look at the pins the more I see a masonry drive anchor. The washer moves up as it is driven to depth. Probably powder actuated type tool.
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