Poster Frame Hanging - What to use?

What should I get to hang up my poster frame? It has these installed on the back of it and not sure what I should get to hang them up properly.

Back of frame has the 2 mounts seen here and I was thinking of this would work?

Do I need to nail this into a stud? https://www.homedepot.ca/product/ook-small-flush-mount-hangers--2pcs/1001027424?gclid=CjwKCAiAzuPuBRAIEiwAkkmOSF5sW4_C9EnnyyEsplWq4CwBf8E8ZQfN1Shx4QH4R8RL3EPQ6ay4ixoCpGYQAvD_BwE&gclsrc=aw.ds

submitted by /u/twofacebluepenguin
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from DIY https://ift.tt/2s4F3eX