Answers.Body: <p>The 6 black parts on the left <em>might</em> me (used):
  <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=30028&amp;name=Tire%2014mm%20D.%20x%209mm%20Smooth%20Small%20Wide%20Slick&amp;category=%5BTire%20&amp;%20Tread%5D#T=C" rel="nofollow noreferrer">Tire 14mm D. x 9mm Smooth Small Wide Slick</a></p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-04T06:28:09.723Z
Answers.LastActivityDate: 2020-08-04T06:28:09.723Z
Answers.UserDisplayName: Henrik supports the community
Answers.Body: <ul>
  <li><p>I can't identify the black parts.</p>
  </li>
  <li><p>The toothed wheel is a <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=2585" rel="nofollow noreferrer">string reel spool</a>.</p>
  </li>
  <li><p>The rest of the parts appear to have come from a Robotics Invention System set from RCX-era Mindstorms:</p>
  <ul>
  <li>The grey wheels with a different material on the inside are <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=2983" rel="nofollow noreferrer">part 2983</a>. None of those sets have 5 of these, though.</li>
  <li>The grey bricks are <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=879" rel="nofollow noreferrer">touch sensors</a>.</li>
  <li>The white wheels are <a href="https://www.bricklink.com/v2/catalog/catalogitem.page?P=32007" rel="nofollow noreferrer">conveyer belt wheels</a>.</li>
  </ul>
  </li>
  </ul>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-08-03T09:46:01.797Z
Answers.LastActivityDate: 2020-08-03T09:46:01.797Z
Answers.UserDisplayName: LegoSonicBoy
Body: <p>I bought a lot of various parts, but I can't seem to identify the following parts.</p>
  <ul>
  <li>The grey wheels have rubber on one side of the axl hole</li>
  <li>I'm thinking that that the black frame-thing isn't Lego, but wanted to be sure before tossing it.</li>
  <li>The white wheels have circular holes, not axl holes.</li>
  </ul>
  <p><a href="https://i.sstatic.net/sywpd.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/sywpd.jpg" alt="Parts" /></a></p>
  
Tags: <part-identification>
Title: Identifying various parts
UserDisplayName: Hildesheim
ThreadText: # Identifying various parts
  
  (Asked by: username_0 on 2020-08-03)
  
  I bought a lot of various parts, but I can't seem to identify the following parts.
  
  * The grey wheels have rubber on one side of the axl hole
  * I'm thinking that that the black frame-thing isn't Lego, but wanted to be sure before tossing it.
  * The white wheels have circular holes, not axl holes.
  
  [![Parts](https://i.sstatic.net/sywpd.jpg)](https://i.sstatic.net/sywpd.jpg)
  
  **Tags:** part-identification
  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_1 on 2020-08-04. Score: 1 | Accepted answer
  
  The 6 black parts on the left *might* me (used):
  [Tire 14mm D. x 9mm Smooth Small Wide Slick](https://www.bricklink.com/v2/catalog/catalogitem.page?P=30028&name=Tire%2014mm%20D.%20x%209mm%20Smooth%20Small%20Wide%20Slick&category=%5BTire%20&%20Tread%5D#T=C)
  
  
  ---
  
  ### Answer by username_2 on 2020-08-03. Score: 4
  
  * I can't identify the black parts.
  * The toothed wheel is a [string reel spool](https://www.bricklink.com/v2/catalog/catalogitem.page?P=2585).
  * The rest of the parts appear to have come from a Robotics Invention System set from RCX-era Mindstorms:
  
    + The grey wheels with a different material on the inside are [part 2983](https://www.bricklink.com/v2/catalog/catalogitem.page?P=2983). None of those sets have 5 of these, though.
    + The grey bricks are [touch sensors](https://www.bricklink.com/v2/catalog/catalogitem.page?P=879).
    + The white wheels are [conveyer belt wheels](https://www.bricklink.com/v2/catalog/catalogitem.page?P=32007).
  
  
  ---
  
  