These are made in our small machine shop that are single point point lathe turned from solid polycarbonate. The bottom of the adapter provides a baffle for consistent throw weights from a full bottle to an empty bottle. The bottle screwed into the measure has a snug fitting plug that can be removed to set the desired weight to be thrown. These are awesome for reloading at the range as many target shooters do. The set screws for the stock reservoir hold it into place with no modification to the measure.
These are very sturdy made for years of use. The way these are made will prove to be stronger than 3d prints of any kind.
PLEASE NOTE THAT, PROVIDE IS ONE ADAPTER AND ONE BOTTLE FOR EACH ORDER.
Thank you