This is a 3x6x3 Lego engine piece that is circular. Just know that it has studs and and stud socket the the sides too. This has not been printed before (except by the MyMiniFactory Team) so I don't know whether it i really compatible with actual Lego, even though I have followed the correct Measurements. Feel free to let me know! Also, I don't know how much support will appear so it may be a problem removing it. Hopefully, it will be little to no support.

Lego is a company that produces blocks such as this. all rights are reserved to Lego and stuff. This was created purely for the sake of fun for others and myself.