Griego MPC's OFT45OMEGA-LB Toby Oft Alpha and Omega 4.5 Tenor Trombone Mouthpiece (large shank) . Griego

TThe λ 4.5 is what Toby Oft primarily uses as Principal Trombone of the Boston Symphony Orchestra. It thrives with a distinctive full sound throughout all registers and dynamics.

Specs:

Cup Diameter: 1.012"
Throat: .264"