Custom T1 Trombone Mouthpiece
Inner diameter: .993" or 25.222mm
Bore Size: Standard - .261" or 6.629mm, Symphonic - .266" or 6.756mm
Cup Depth: 1.217" or 30.937mm
The T1 is available in both the heavy or light weight blank style. It is also available in either the large shank style or the small shank (tenor).