A carefully selected Bach mouthpiece can help improve a player's embouchure, attack, tonguing, and endurance. Vincent Bach was a rare combination of artist and engineer. A mechanical genius and acclaimed trumpet soloist, his instruments and mouthpieces are used today in every major studio and orchestra in the world. Bach personally designed the tools and composed the plans that continue to set the high standards for making all Bach products today.

Bach 1.5C Trumpet Mouthpiece, 

The Bach 1.5C Trumpet Mouthpiece has a large diameter cup for good all-around use. In addition to its medium cup, this model has a #10 backbore that produces a rich, full, clear tone. "C" models are preferred by many players that alternate between Bb, C, and D trumpets. 

Specifications

Instrument: Trumpet
Manufacturer Model: 3511HC
Series: Standard
Plating: Silver 
Cup Diameter: 17mm
Cup Depth: Medium
Rim Shape: Medium Wide
Bore: 3.66mm
Backbore: #10