This stl is tested fully and suitable for printing production and has been tested before stl, obj, 3dm, and fbx files available The size of ring is US=9 and also weight is described on the picture slide . If you want more design so please visit my page. It is a printable model it is castable approx in all metals. If you want to design your personal model so please hire or contact us. I will provide you with the best service. I wish you a good day. Thanks!