These motor start capacitors are dry, electrolytic, non-polarized types for intermittent duty in AC motor starting circuits. The round cases are made of moisture and oil resistant molded phenolic resin or plastic. They have standard dual blade terminals.
Not to much to say about capacitors other than they work like they are supposed too. I had a piece of equipment that had 125V. capacitors on it and the motor runs on 240 volts. .They did not last too long. It was made in Taiwan . Maybe I can't expect much more.