Do your product come with the drain assembly included in the finish you order?

I am sorry the drain assembly is not included and needs to be purchased separately. The following are the recommended drains on our website for your reference:https://www.homary.com/antique-brass-vessel-sink-pop-up-drain-without-overflow-solid-brass.html (Without overflow)https://www.homary.com/classic-antique-brass-pop-up-drain-with-overflow-for-bathroom-sinks-solid-brass.html (With overflow)According to your sink with or without overflow, please choose the drain with or without overflow.