One of many videos In which I show how I finish the ends of 3/4" EMT, what I called "bow tie" to mate precisely with a Maker Pipe connector bolt clamp indentation for a more permanent and safe connection.
In this particular video, the double tubes I show are for the front end of an electric go kart, to hold the front wheel spindles, it was a way to refine the single bar front end I had originally done on my first EMT frame/MP connector racing go kart inspired prototype.