La Tromba T1 Valve Oil BR_CMP "The C is a very

"The C is a very powerful mouthpiece that has a great volume of sound

This model fits a bass trombone with a bell size up to 10

Flexibility is good and articulations will be cleanly defined

relaxed feel

Quick Comparison - The GR 64 Series cup diameter is somewhat similar to a conventional 7 diameter

La Tromba T1 Valve Oil BR_CMP "The C is a veryLa Tromba T1 Valve Oil The ultimate all round oil. Suitable for both Piston and Rotary valve instruments. Prevents corrosion and gumming. Reduces potential frictional noise. Regular use assures optimal operating characteristics. Improves the smooth running Provides protection against sediments Prolongs durability Reduces frictional noise For Rotary and Piston valves