I have seen people refer to the "Erling brick" or "headlight brick" on LEGO forums. What kind of brick are they talking about?

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    What i want to know is why is the stud inset in the brick? – J. Walker Feb 7 '13 at 16:22

I definitely know them as the headlight brick, and they look like this:

headlight brick geometry

HoMa's world of bricks has a nice page dedicated to this brick!


LEGO's Pick a Brick lists this as an "Angular Brick 1x1", Design ID 4070 (equivalent to the piece/part id).


enter image description here

The Erling Brick: named by the LEGO Designer Erling Dideriksen, who invented this element in 1979.

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    The model shops refer to this brick as a "washing machine" brick :-) – KevinS Nov 16 '12 at 6:01

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