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Any part number information about this technic beam?

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1 Answer 1

up vote 5 down vote accepted

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.

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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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