This is a technical post. Anyway, a while back, we posted bids for an entire set of Carpano cutters. These are the discs below. They are used with the topping tool to modify gear teeth. Its usually very rare for brand new cutters to appear on the open market and it was even rarer for an entire set. For watchmakers, pretty cool eh ? Of course we are showing off ! It was extreme good luck that we got this ! Nobody makes them anymore !!