Hello, this is a four-ring kit ready to print or use in CG scenes. They are very detailed.You'll find several files, those with the name of the ring are frozen 3Ds (not editable). The only file where you can find the editable source 3D elements is in Editable rings.c4d. Those files that contain the word studio were created to render the images that you see in this publication.Also, I attached STL converted files and FBX in 7.5 (2016) version.Enjoy!