This is a double-walled glass dripper. I am selling it because I don't use it. Since I don't clearly remember using it, I've listed it as "No noticeable scratches or stains." Heat resistance is 120°C. Please be aware of any air bubbles or scratches within the glass that may have occurred during manufacturing. I plan to ship via courier, so I'm not considering a significant price reduction. Also, please refrain from purchasing if you are concerned about minor details or are overly sensitive. Brewista Tornado Duo Double Wall Glass Dripper 05