<https://cardontools.com/shop/oneway-spindle-adaptor-m33-x-3-1-2-to-30-x-3-5-no-2575/#product>
<http://schema.org/description>
"For adapting your oneway lathe spindle from M33 x 3½ to 30 x 3.5. It has a Female M33 x 3½ thread and a male 30 x 3.5thread."
<https://cardontools.com/shop/oneway-spindle-adaptor-m33-x-3-1-2-to-30-x-3-5-no-2575/>