Keith Oshiro Top Inner Diameter: .960" Outer Diameter: 1.515" Cup: Medium Bowl Bore: .250" Backbore Options (Sold Seperately): T1 - T6 (Keith uses T3)
"I have been playing on a custom Warburton trombone mouthpiece since 1991. After my first year playing with Maynard Ferguson, I went in search of a better mouthpiece. After trying many different ...
