Griego MPC's SB65-NY-SP Classic 6.5 Trombone Mouthpiece (small shank, new york, silver plated) . Griego

Model 6.5 utilizes the NY bach style rim with a vintage NY shaped bowl. Great for baroque music or when ease in the upper register is a must.

Specs:

Cup Diameter: 1.000" or 25.40 mm
Throat: .229"