I was wondering what the two grey tile like bricks in the image below are? I wish to order some online, so would appreciate knowing their name.

Image of grey bricks

  • 1
    Hi Kared and welcome to LEGO Answers :) Is there any chance you could edit your image to include some arrows or similar pointing to the exact elements you're asking about? Commented Jan 29, 2016 at 14:01
  • If you need any help in the future, you can check out Brickowl, Bricklink, or Firestartoys!
    – Samuel L.
    Commented Feb 15, 2016 at 0:51

2 Answers 2


This is a 3743 - Technic, Gear Rack 1 x 4 and there are 2 times 2 of these in your picture (2 on the left and 2 on the right).

enter image description here

I guess your description is a little vague, because if you are talking about the middle part (the shining light gray pieces), they are actually not bricks/tiles, but the axle end of an NXT motor (the right side of the motor in the below picture).

enter image description here

  • Yep, I think the question is referring to the end of the motor. Commented Jan 29, 2016 at 14:02

It's difficult to be certain due to the angle and quality of the image but I think they are these: Technic, Liftarm 1 x 3 Thick

Technic, Liftarm 1 x 3 Thick

Item No: 32523

They are/were produced in many colours including both 'light bluish grey' and light grey'.

More details on bricklink


Just realised you you referred to them as 'tile like bricks' so maybe it is this:

Part 3743 Technic, Gear Rack 1 x 4

Part 3743 Technic, Gear Rack 1 x 4 Bricklink link

It would be a lot easier if you could isolate the elements you are interested in and take better photo


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.