Das Kit Key Replacement

This is my 3D model for a key for a Das-Kit e-bike. This key replacement is actually for the Das-Kit e-bike but I think you can also use it for other things with a few slight adjustments, which is why I call it a universal key. It is my first CAD model because I am very new to 3D printing and CAD. I did my first project in Tinker-CAD because Fusion360 is still too difficult for me. I hope you understand this and I hope you like my first 3D model. You are welcome to develop it further or make other designs out of it. You are also welcome to convert it with CAD as long as the original internal dimensions fit. Thank you