The production quality seems really good, and the test pieces I've done with the stamps have been quite satisfactory.
However the Pictures and listing title are misleading. I expected to receive the 'Professional Kit' shown in one of the product pictures, which includes a steel block, hammer, and for some reason a tie clip blank, as well as the letter stamps. But I only received the stamps without any of the additional tools. It's not a big deal, and I now notice it does not specify that these things are included in the description, but it is still misleading.