You can’t see me, but I can see you; To be more specific, I see through. What am I?

Question

What am I?

I will help you with your writing,
Probably through me you will see,
But if you want to ship me,
You'll put me right inside of me.

I wear many different hats you know,
In construction plus I'm tracing,
I also do work for the board,
Lots of kids use me for a racing.

You can fold me, tear me,
Rip me without using all your might,
But be careful how you touch me,
I may give you my famous bite.

Answer 1

It is X-Ray.
(P.S. The "see through" part was a dead give away !)