<p>The parts you are looking for are <a href="http://www.bricklink.com/catalogItem.asp?P=44224" rel="nofollow">Technic Rotation Joint Disk with Pin Hole and 3L Liftarm Thick</a> and <a href="http://www.bricklink.com/catalogItem.asp?P=44225" rel="nofollow">Technic Rotation Joint Disk with Pin and 3L Liftarm Thick</a>.</p>

CC BY-SA 3.0
2013-08-04T10:37:11.887Z
Do you know if they make sense when they are not in pairs?
auselen
CC BY-SA 3.0
2013-08-04T15:23:35.697Z
Can you expand on "make sense"? I have seen one half used by itself in both MOCs and official sets such as http://www.bricklink.com/catalogItem.asp?S=6857-1 mostly as fork/hub connection for motorcycles.
Nathan Stohlmann
CC BY-SA 3.0
2013-08-04T18:31:52.550Z
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
CC BY-SA 3.0
2013-08-04T22:34:29.637Z
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
CC BY-SA 3.0
2013-08-04T08:35:20.657Z
2013-08-05T09:40:33.570Z
2013-08-05T09:40:33.570Z
gev
<p>Any part number information about this technic beam? </p>

<p><img src="https://i.sstatic.net/Vx3Kx.jpg" alt="enter image description here"></p>

CC BY-SA 3.0
2014-09-13T14:49:20.053Z
I just realized this is the piece used for legs in AT-AT walker 8129.
auselen
<technic><part-identification>
Identification of arm like beam
auselen
# Identification of arm like beam

(Asked by: username_0 on 2013-08-04)

Any part number information about this technic beam?

![enter image description here](https://i.sstatic.net/Vx3Kx.jpg)

**Tags:** technic, part-identification

> **Comments:**
> **username_0**: I just realized this is the piece used for legs in AT-AT walker 8129.  

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## 1 answers

### Answer by username_1 on 2013-08-04. Score: 7 | Accepted answer

The parts you are looking for are [Technic Rotation Joint Disk with Pin Hole and 3L Liftarm Thick](http://www.bricklink.com/catalogItem.asp?P=44224) and [Technic Rotation Joint Disk with Pin and 3L Liftarm Thick](http://www.bricklink.com/catalogItem.asp?P=44225).

> **Comments:**
> **username_0**: Do you know if they make sense when they are not in pairs?  
> **username_2**: Can you expand on "make sense"? I have seen one half used by itself in both MOCs and official sets such as http://www.bricklink.com/catalogItem.asp?S=6857-1 mostly as fork/hub connection for motorcycles.  
> **username_3**: 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  
> **username_0**: 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.  

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