These are a high-quality duplicate of the original and, like the originals, will need fitting. They are not 3-D printed, but are manufactured from high-quality polymers in a 2-part process. Because these bullseyes were manufactured for about 100 years, there are differences in both the bullseyes and the hole in the stocks, so they usually need fitting to the hole, and will need to be glued in just like the original replacements. Then, they can be trimmed and filed on the outside to match the contour of your stock. They are .327″ OD and .500″ long.
Sorry, we are unable to do any international sales of firearms parts due to excessive cost and regulations.