This component was designed to fit around the base of an evod atomiser. Its use is to allow a tube to blow air through the atomiser body. This is part of R5's bad motivator system.
The inside edges that the base fits inside of, will be a tight fit and will need some slight trimming.
Full details can be found on my Blog, link in bio.
I first printed this at 30% infill, but found that because of its size, 50% to solid worked best.