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Any part number information about this technic beam?

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  • I just realized this is the piece used for legs in AT-AT walker 8129. – auselen Sep 13 '14 at 14:49
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The parts you are looking for are Technic Rotation Joint Disk with Pin Hole and 3L Liftarm Thick and Technic Rotation Joint Disk with Pin and 3L Liftarm Thick.

  • Do you know if they make sense when they are not in pairs? – auselen Aug 4 '13 at 10:37
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    Can you expand on "make sense"? I have seen one half used by itself in both MOCs and official sets such as bricklink.com/catalogItem.asp?S=6857-1 mostly as fork/hub connection for motorcycles. – Nathan Stohlmann Aug 4 '13 at 15:23
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    While they go nicely together, they are not pre-assembled, so they are to be considered as individual parts which can be used independently. I didn't know it even happened in an official LEGO set, though - nice catch – Joubarc Aug 4 '13 at 18:31
  • I think I just meant if they are functional as individual parts, like you can get some other kind of rotation. I found them as 4 pairs in a flee market so I don't really know where they came from. – auselen Aug 4 '13 at 22:34

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