Red Spiral Glass Plugs
Hand-made gorilla / borosilicate glass plugs in a spiral shape.
These are a very odd color. The picture makes it appear like they're dark red and almost solid red with some transparent areas.
In person the red almost appears like webbing inside the glass. There are areas that are transparent and areas there the red is thick and dark, but most of it looks like a brighter, more vibrant red webbing.