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<p>[QUOTE=&quot;springfld.arsenal, post: 255113, member: 54&quot;]Clue:&nbsp; not hand tools, used in machines in factories.&nbsp; See tape in photo for dimensions.&nbsp; They are all steel and weigh about 4-5 lbs. ea.&nbsp; The threads seem to be left-handed, but that probably won&#039;t help you at all.&nbsp; I hadn&#039;t a clue about these when I got them a few days ago, and had to consult many machinists before I got what I think is probably the correct ID.</p><p><br /></p><p><img src="https://springfieldarsenal.files.wordpress.com/2017/07/img_5576.jpg" class="bbCodeImage wysiwygImage" alt="" unselectable="on" />[/QUOTE]</p><p><br /></p>

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