NEW Denis Wick ‘2NAL’ Bass Trombone mouthpiece in silver plate (large shank).
Cup Diameter: 27.00mm
Rim Width: 6.15mm
Bore Size: 7.30mm
Back Bore: Barrel
Narrower rim with excellent flexibility and easy high and low registers.
Like the 2AL, but with narrower rim, as used on Vincent Bach bass trombone mouthpieces.