You Never Realized What This Detail Is For

You Never Realized What This Detail Is For
Take a look at your pencil: why does it have a pink rubber? Each time we use a pencil, it comes with a pink rubber on its top.

https://www.youtube.com/watch?v=OLw3CRB0eAk
via YouTube https://www.youtube.com/watch?v=OLw3CRB0eAk