What is his pen name?

I drew a picture with a new felt-tip pen.

My new graphics tablet is very easy to use.

My new marking pen is brightly colored.

My new marker pen has vibrant colors.

This brush pen is easy to write with, and it's my favorite.

I bought a new highlighter.

He is drawing a picture with a magic marker.

He is a master of pen spinning.

He has developed a writer's callus on his hand because he writes for long hours every day.