The screen at the bottom of the mouthpiece of Utillian 620 starts to degrade over time. The replacement screens are offered to make the user enjoy vaping for a more extended period. The screens filter keeps the vapor fresh and clean and lets the user enjoy the session.
> Utillian 620
how to use it
> Unscrew the mouthpiece and remove the older screen and O-ring from the bottom of the mouthpiece.
> Replace it with the new one, fix the O-ring and reattach the mouthpiece.
> Enjoy your vaping now!