Replace your old wax canisters for your Utillian 722 or Utillian 721 with this fresh set of 2 stainless steel canisters. The canisters are identical to the wax canister you originally received for the Utillian 722 or Utillian 721. These wax canisters allow for easy loading of your favorite concentrate and help keep your vaporizer's heating chamber clean and gunk-free.