Answers.Body: <p>Bricklink lists it as</p>
  
  <blockquote>
    <p>Technic, Axle 5.5 with stop</p>
  </blockquote>
  
  <p>The blue number is the length of the axle. It is mentioned in the part list to distinguish axles of different lengths in a set. </p>
  
  <p>In this case, the length is 5.5, so yes, it is written as <code>5,5</code> because of the locale.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2018-11-08T06:55:01.110Z
Answers.LastActivityDate: 2018-12-19T19:44:23.137Z
Answers.LastEditDate: 2018-12-19T19:44:23.137Z
Answers.UserDisplayName: Metalbeard
Body: <p>I have a part inventory for a set and it has some axles with numbers next to them. This is not a technic set, but I imagine the numbers are the same as in this question - <a href="https://bricks.stackexchange.com/questions/4747/lego-technic-part-numbers">LEGO Technic part Numbers</a> </p>
  
  <p>But one of the axles has two numbers (5,5) - is this a comma because of the locale in which it was purchased uses the comma as the USA would use a (dot) for a decimal? Or does it have something to do with the fact that the collar on the axle isn't at the end?</p>
  
  <p><a href="https://i.sstatic.net/BtRm1.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/BtRm1.jpg" alt="enter image description here"></a></p>
  
Tags: <instructions><size>
Title: What are these numbers for this element name?
UserDisplayName: Raystafarian
ThreadText: # What are these numbers for this element name?
  
  (Asked by: username_0 on 2018-11-08)
  
  I have a part inventory for a set and it has some axles with numbers next to them. This is not a technic set, but I imagine the numbers are the same as in this question - [LEGO Technic part Numbers](https://bricks.stackexchange.com/questions/4747/lego-technic-part-numbers)
  
  But one of the axles has two numbers (5,5) - is this a comma because of the locale in which it was purchased uses the comma as the USA would use a (dot) for a decimal? Or does it have something to do with the fact that the collar on the axle isn't at the end?
  
  [![enter image description here](https://i.sstatic.net/BtRm1.jpg)](https://i.sstatic.net/BtRm1.jpg)
  
  **Tags:** instructions, size
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2018-11-08. Score: 10 | Accepted answer
  
  Bricklink lists it as
  
  > Technic, Axle 5.5 with stop
  
  The blue number is the length of the axle. It is mentioned in the part list to distinguish axles of different lengths in a set.
  
  In this case, the length is 5.5, so yes, it is written as `5,5` because of the locale.
  
  
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