Up here in the north we call those things Q-tips sold at literally most places that sell anything. Even at your 7-11 or WAWA whatever is in your area. Even though I'm sure you can probably go to a paint store and buy pretty much exact same thing labeled differently or 10x the price.,
Now that was a joke so lets not get panties bunched up. But when I was young my uncle did body work and whenever I was around body shops I seen Q-tips and thought god body guys are religious on clean ears. But actually besides that and getting all the different colors out of there noses(not as much mask/respirator wearing back then) I learned that a Q-tip works wonders on a lot of things and 1 being touching up paint nicks. Holds the paint good, dabs paint easily, just easier all around. Also does wonders getting that touch of grease/lube needed on that tight spot without getting it everywhere when fat fingers don't allow.