Best Brass TB-L-5B mouthpiece for trombone, cup diameter O 25,75mm, cup depth: mildly deep, O 7,10mm throat, large shank, gold plated, similar bach 5G (slightly larger)

Best Brass TB-L-6B mouthpiece for trombone, cup diameter O 25,37mm, cup depth: mildly deep, O 7,10mm throat, large shank, gold plated, fits for orchestra player who require richer and heavy sound, similar schilke 50