This is just an experiment with the extrude around an axis feature in Solidworks. BUT.... It kinda looks like a bead blasted blank of some sort, ready to be machined. I wanted to make splines on the thicker end OD and threads in a few places as well but not sure on those items just yet in SW. Anyway, the ACAD drawing shows a profile and the part file itself shows the extrusion. Pretty cool stuff... :)