The format is Rhinoceros 3D Matrix 9.0. A ll content has b een treated and fixed for good and fast production. As a designer, many similar models are in my archive. If necessary, I can design like these models and derivatives of these models. If you encounter any problems or if you have any questions, you can contact me without hesitation. With respect, thank you. All content has been treated and fixed for good and fast production. As a designer, many similar models are in my archive. If necessary, I can design like these models and derivatives of these models. If you encounter any problems or if you have any questions, you can contact me without hesitation. Thank you.0963482019