I can vouch for most Italian gear cutters. Our stuff was made by Antonio Masiero; who was bought out by Euroricambi SPA. Other italian gear vendors of note would be SMI who sed to make OEM replacement quality stuff
Note: their material selection won't be the same as what we're used to in the states. We spec ASTM 8620 and they use a steel close but not exact to 8620. Im not sure if its something to do with the rating/classifying system or not.