Best Brass FH-1X mouthpiece for flugelhorn, cup diameter O 17,15mm, cup depth: very deep, O 4,50mm throat, gold plated

Best Brass FH-9X mouthpiece for flugelhorn, cup diameter O 15,95mm, cup depth: very deep, O 4,50mm throat, gold plated

Schilke MOST 5-FL, mouthpiece for flugelhorn, Signature series, cup inner diameter .674" (17,13mm), backbore #20, silver plated, the 5-FL is slightly smaller than the 3-FL, has the same rim properties as the MOST 5P...'