French-style alto
This piece has the colourful and focused sound usually associated with French classical mouthpieces of the past 70 years, and indeed, is somewhat similar in overall design.
The larger tip opening is a very good general-purpose mouthpiece, with the finesse required for classical repertoire yet with the ability to wail away, while the smaller one is especially adept at quieter settings and overly long practice hours, or anyone who prefers a small tip, really.