N14A, B, C Mouthpipe Receiver Forming Mandrels

When installing a new French horn mouthpipe or a new trombone venturi tube, these custom steel forming dies provide the proper taper to receive the mouthpiece inside the ferrule or cork barrel.
N14A For French Horn Mouthpipe
N14B For Trombone Mouthpipe
N14C Bass Trombone Mouthpipe Mandrel