<p>This looks like a <a href="https://brickset.com/parts/design-3956" rel="noreferrer">PLATE 2X2 ANGLE</a>, which is broken. There is a rough side shown on the picture.</p>

<p><a href="https://i.sstatic.net/8IyvB.jpg" rel="noreferrer"><img src="https://i.sstatic.net/8IyvB.jpg" alt="enter image description here"></a></p>

CC BY-SA 3.0
2017-08-28T03:08:36.777Z
Looks like it was intentionally smoothed a bit after cutting or breaking, possibly for some one-off custom purpose.
Russell Borogove
CC BY-SA 3.0
2017-08-28T08:51:55.773Z
@RussellBorogove: I have lots of parts that are 30-40 years old that have a broken edge that is now rounded because it was in use for so long
PlasmaHH
CC BY-SA 3.0
2017-08-28T10:19:50.463Z
Huh, I thought it was familiar. Good job!
Ambo100
CC BY-SA 3.0
2017-08-29T20:41:49.547Z
Sorry for the delay--there is indeed a Lego part number on the bottom, which is 3956. On closer inspection, I think the above comments are right--the broken edge is not completely flat, but rounded! No wonder I couldn't find this in Bricklink.  Thanks to all!
sampoerna quatrain
CC BY-SA 3.0
2017-08-28T00:18:27.437Z
2017-08-28T23:56:01.343Z
2017-08-28T23:56:01.343Z
Joost
<p>Once again, I need the collective wisdom of this group to identify a mystery LEGO element! </p>

<p>I did a search for "2x2"and went through scores of Bricklink pages, but I couldn't find this particular piece. </p>

<p>It's the size of a 2x2 plate, but with this added grooved part that I've never seen before.</p>

<p><a href="https://i.sstatic.net/3yArG.jpg" rel="noreferrer"><img src="https://i.sstatic.net/3yArG.jpg" alt="enter image description here"></a></p>

<p><a href="https://i.sstatic.net/9QqyR.jpg" rel="noreferrer"><img src="https://i.sstatic.net/9QqyR.jpg" alt="enter image description here"></a></p>

CC BY-SA 3.0
2017-08-27T23:27:47.323Z
Can you find a number anywhere on the bottom of the brick? [I can just about make up something that looks like '90-7' but I'm not sure.](http://i.imgur.com/zVSFaBd.png)
Ambo100
CC BY-SA 3.0
2017-08-28T05:11:35.343Z
@Ambo100 I think it's "4-06" upside down?
Adeptus
<part-identification>
What is this piece slightly longer than a 2x2 plate with grooves and a hole?
sampoerna quatrain
# What is this piece slightly longer than a 2x2 plate with grooves and a hole?

(Asked by: username_0 on 2017-08-27)

Once again, I need the collective wisdom of this group to identify a mystery LEGO element!

I did a search for "2x2"and went through scores of Bricklink pages, but I couldn't find this particular piece.

It's the size of a 2x2 plate, but with this added grooved part that I've never seen before.

[![enter image description here](https://i.sstatic.net/3yArG.jpg)](https://i.sstatic.net/3yArG.jpg)

[![enter image description here](https://i.sstatic.net/9QqyR.jpg)](https://i.sstatic.net/9QqyR.jpg)

**Tags:** part-identification

> **Comments:**
> **username_1**: Can you find a number anywhere on the bottom of the brick? [I can just about make up something that looks like '90-7' but I'm not sure.](http://i.imgur.com/zVSFaBd.png)  
> **username_2**: @username_1 I think it's "4-06" upside down?  

---

## 1 answers

### Answer by username_3 on 2017-08-28. Score: 31 | Accepted answer

This looks like a [PLATE 2X2 ANGLE](https://brickset.com/parts/design-3956), which is broken. There is a rough side shown on the picture.

[![enter image description here](https://i.sstatic.net/8IyvB.jpg)](https://i.sstatic.net/8IyvB.jpg)

> **Comments:**
> **username_4**: Looks like it was intentionally smoothed a bit after cutting or breaking, possibly for some one-off custom purpose.  
> **username_5**: @RussellBorogove: I have lots of parts that are 30-40 years old that have a broken edge that is now rounded because it was in use for so long  
> **username_1**: Huh, I thought it was familiar. Good job!  
> **username_0**: Sorry for the delay--there is indeed a Lego part number on the bottom, which is 3956. On closer inspection, I think the above comments are right--the broken edge is not completely flat, but rounded! No wonder I couldn't find this in Bricklink.  Thanks to all!  

---

