Re: What size/part of Kam snaps?
I'm not 100% sure how you want to cover the snaps but yes, if you want it to 'snap' into the socket part you would need both studs and caps. You always need a cap paired with either a socket or stud. You do need pliers or a snap press to push the two parts together.
How many will you need? I think I understand what you're trying to do and could probably do it for you and mail them to you for just the cost of snaps.
-loving wife to C (4/08)
and SAHM to my sweet littles A (9/10)
and S (8/13)