This is a mouthpiece created by 3D scanning and printing a NY Meyer. I believe the NY Meyer has a fullness not found in current Meyer mouthpieces, and this mouthpiece allows you to fully experience that element. At about one-tenth the price of the real thing, this is a great value mouthpiece that lets you enjoy the essence of the NY Meyer. Below is the description from 3dscanjp: This is a generic mouthpiece created by 3dscanjp. It is manufactured using the latest high-definition 3D printer introduced in November 2023. This product is created by obtaining data through a world-class high-definition scan of the following original. The scan used by 3dscanjp has an error of about 0.001mm (equivalent to 1/80th the diameter of a hair cross-section) compared to the actual product, making it far superior in terms of reproducibility compared to previous replica manufacturers and replica models. ● Original Model: New York MEYER 5SM To Fit: ALTO Tip opening: 5 Baffle: Low Baffle Chamber: medium Original or Reface: original