4
Clean it after every use with a q tip otherwise they get gross/waxy other than that their sweet
I would get a pivot so u can a glass rig
Make sure the clean under the glass piece, me and my roomate shattered ours cause the oil stuck to the glass when we pulled it off
That’s exactly how my roommate broke his. The piece where you dab got stuck to a paper towel for a minute the fell off an shattered🙃