ring cuban chain 7 US size This is a 3D CAD file of a ring in the shape of a Cuban diamond chain. In 3DM and STL format The STL format is completely ready for printing and has been corrected for errors. If you liked this ring but you want a different size, then you can contact me and I will make the right size for you. I indicated the weight and number of stones on the screenshot in the gallery of this product.