Which Category To Post Ad For Carbon Fibre Fountain Pen?

[2South]

Brand new to the site. I went to post a new advert and under "Select Category" I see "Writing Instruments" and then Gold, Ruby, Emerald, Diamond. I see that for ink too so I'm a bit confused. Where would I list an ad for a carbon fibre fountain pen? Please direct me to the right category. Thank you in advance!

 

UPDATE: I found the explanation after searching around a bit more. I edited my specific pen out of this post but can't figure out how to delete the post. MODERATOR feel free to delete post. Sorry.

Edited July 9, 2017 by 2South