King 2B
TromboneIn Production
Precision Specifications
RIM DIAMETER25.4 mm
CUP DEPTHMedium
THROAT ∅6.63 mm
BACKBOREmedium
SHANKsmall
CUP SHAPEbowl
Rim Widthmedium
Rim Contourking-standard
Throat Drill #—
Materialbrass
Finishsilver-plate
Weightstandard
Recommended For
JazzCommercial
Player Reviews
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Add Quick Rating →Community Sentiment
Based on 1 player-submitted rating; BrassFit does not assign default scores.
5.0Resistance
5.0Rim Comfort
5.0Rim Bite
5.0Brightness
5.0Tone Focus
5.0Articulation
5.0Flexibility
5.0Endurance
Player Notes1 review
Anonymous Brass PlayerJun 16, 2026
Quick player rating only.
Reference Notes
The King 2B is a medium-cup tenor trombone mouthpiece featuring a 25.4mm rim diameter and 6.63mm throat. It has a medium backbore, small shank. Well-suited for jazz and commercial playing. Use these measurements as a comparison starting point: fit and response still depend on the player, dental structure, instrument receiver, and each manufacturer's measuring method.