Guess What It Is - part 3 (difference, interior, light)

[TheDragonslayer]

Here is my third one. Guess what it is? It is something everyday and ordinary, but somewhat different.

[TheDragonslayer]

Here is another picture of the subject. This is an ordinary, everyday object that nearly every body uses. It has a different application. What is it and how is it different than others like it?

[Machinist]

Tail light from a car?

[TheDragonslayer]

Getting late, I forgot the second picture

[Machinist]

Bottom edge from a glass container?

[TheDragonslayer]

Close. Think outside the box.

[TheDragonslayer]

Sorry, first reply, Machinist.

[Machinist]

Am I close on the first or the second?

[TheDragonslayer]

On the first one. Your turn

[Machinist]

Is it a headlight?