This is the metal section of the Linx Hypnos Zero (or Linx Hypnos) mouthpiece. If one of the two parts breaks down, you don't have to replace the whole mouthpiece, as you can replace the two sections individually.
For optimal airflow and flavour preservation, the mouthpiece needs to be clean. Both the glass and metal partts can be soaked in ISO-alcohol or cleaned with an Easy ISO-swab.
Please note: this is the metal section of the mouthpiece. The mouthpiece can't be used without the glass mouthpiece section.