Keep your Utillian 721 or Utillian 722 fresh and clean with the Utillian 721/722 Care Package. A perfect replacement pack if your screens and o-rings have started to degrade from use. This kit comes complete with a set of 3 screens, 3 mouthpiece o-rings, and 3 magnetic cap o-rings. If you're experiencing below average vapor quality with your Utillian vaporizer, replacing your old o-rings with the ones from this set will bring its performance back to par.