ドラム内通過式の選別機。選別穴は２～４段階指定できます。
provider: youtube
url: https://www.youtube.com/watch?v=4KLfWlZFk84
src in org: https://www.youtube-nocookie.com/embed/4KLfWlZFk84?feature=oembed&wmode=opaque
src in mod: https://www.youtube-nocookie.com/embed/4KLfWlZFk84?wmode=opaque
src gen org: https://www.youtube-nocookie.com/embed/4KLfWlZFk84