.675″ L-15A4L Trumpet Mouthpiece $115.00 – $140.00 The L-15A4L has a semi-flat rim that is very comfortable. It has some undercut for chop room, which will make the inside diameter feel a little larger than the specs reflect. The cup is medium to medium deep. Customers that have played this piece have used it for solo, lead, jazz, or any style of playing, and it can really deliver that extra zing when needed! Read more