If you have recently bought a Lenovo M73 like myself often you will get no hard drive or caddy, or like in my case a caddy that has been destroyed by the refurbishment team.
This model is a complete HDD Caddy replacement.
This Model was made by TomekB and was published originally on Printables.com (https://www.printables.com/model/427419-hdd-frame-lenovo-m73-tiny), I am uploading here to allow Bambu users to print from the App.
All thanks to TomekB!