12mm Hex for TRX4M

So, I thought of a super simple design to make a 12 mm drift wheel fit, and thought I would have a crack at CAD. This design is to be used with a 6mm TRX4M hex, but fits over top for a total of 9mm width. Designed to be used with my Injora Diamond axles, not sure if those are extended over stock for threading. But also to be used are some 3mm washers to hold the larger wheel on as the center hole is larger, as well as the Injora long wheel nuts (designed to be used with their wheel spacers.)

If you like this design, please leave any feedback you can and let me know! Was my first time trying to put something together in design software, will be printing some as soon as possible!