<p>They were used until 1990 for trains, the holes are there to stick in the wheels.</p>

<p>This is the part: <a href="http://www.bricklink.com/catalogItem.asp?P=7049b">http://www.bricklink.com/catalogItem.asp?P=7049b</a>
And these (for example) were the wheels: <a href="http://www.bricklink.com/catalogItem.asp?P=wheel2a">http://www.bricklink.com/catalogItem.asp?P=wheel2a</a></p>

CC BY-SA 3.0
2014-10-21T19:44:07.720Z
you mean the 1970's, right ?
Stephane Delcroix
CC BY-SA 3.0
2014-10-22T05:17:17.753Z
Makes sense as there was also wheels and tracks in the haul. Thanks a lot.
Keller
CC BY-SA 3.0
2014-10-22T15:16:48.023Z
You're welcome.
@Stephane, no I mean the 1990's, it was still in basic building sets in the late 1980's and the early 1990's.
Fra Sprea
CC BY-SA 3.0
2014-10-22T20:17:06.387Z
oh, I remember them in the early 80's.
Stephane Delcroix
CC BY-SA 3.0
2014-10-28T19:55:40.803Z
@Laz75 According to the BL page you posted, it seems most of these kits with these parts were released in the 70s, with only a tiny handful of kits in the 90s having these in them.
Mr. Shiny and New 安宇
CC BY-SA 3.0
2014-10-29T20:21:23.097Z
@Mr.ShinyandNew安宇 you're absolutely right, that's why I wrote "until"!

The white ones though, the ones in the picture, are actually only from the 1960s amd 1970s, you're right.
Fra Sprea
CC BY-SA 3.0
2014-10-21T06:50:52.620Z
2014-10-21T06:50:52.620Z
Fra Sprea
<p>I recently bought at haul and found a bunch of these regular sized bricks. Can anyone identify the for me?</p>

<p>They are 2x4 bricks, but with holes in the side of the bricks:</p>

<p><img src="https://i.sstatic.net/aDmXk.png" alt="Bricks with holes"><br />
From: <a href="https://i.sstatic.net/Atc7p.jpg" rel="nofollow noreferrer">https://i.sstatic.net/Atc7p.jpg</a></p>

<p>It says Lego on the stud, but no part numbers are to be found anywhere, so I guess they are old.</p>

<p>Any help is appreciated.</p>

<piece-information><part-identification>
What are these bricks with filled interior and holes/tubes going through?
Keller
# What are these bricks with filled interior and holes/tubes going through?

(Asked by: username_0 on 2014-10-21)

I recently bought at haul and found a bunch of these regular sized bricks. Can anyone identify the for me?

They are 2x4 bricks, but with holes in the side of the bricks:

![Bricks with holes](https://i.sstatic.net/aDmXk.png)  
From: <https://i.sstatic.net/Atc7p.jpg>

It says Lego on the stud, but no part numbers are to be found anywhere, so I guess they are old.

Any help is appreciated.

**Tags:** piece-information, part-identification


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## 1 answers

### Answer by username_1 on 2014-10-21. Score: 9 | Accepted answer

They were used until 1990 for trains, the holes are there to stick in the wheels.

This is the part: <http://www.bricklink.com/catalogItem.asp?P=7049b>
And these (for example) were the wheels: <http://www.bricklink.com/catalogItem.asp?P=wheel2a>

> **Comments:**
> **username_2**: you mean the 1970's, right ?  
> **username_0**: Makes sense as there was also wheels and tracks in the haul. Thanks a lot.  
> **username_1**: You're welcome. @Stephane, no I mean the 1990's, it was still in basic building sets in the late 1980's and the early 1990's.  
> **username_2**: oh, I remember them in the early 80's.  
> **username_3**: @Laz75 According to the BL page you posted, it seems most of these kits with these parts were released in the 70s, with only a tiny handful of kits in the 90s having these in them.  
> **username_1**: @Mr.ShinyandNew安宇 you're absolutely right, that's why I wrote "until"!  The white ones though, the ones in the picture, are actually only from the 1960s amd 1970s, you're right.  

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