SMALL EUROPEAN SHANK:
End diameter of .490″. Very similar to large shank trombone.
Mouthpieces – Doug Elliott XS shank. Dennis Wick in the sizes 1 through 5, without L in the name.
Instruments – Older Besson, older Besson and Boosey & Hawkes, American Eb tubas, some old German 3/4 size BBb tubas. Also referred to as the Eb tuba size.
End diameter .530 to .537″.
Mouthpieces – JK Exclusive, “Normal” Perantucci, Laskey “E” shank.
Insruments: Fits most Alex F tubas and some C’s, Amati, B&S, Cerveny, Kalison, Kurath, Meinl-Weston large models, Mirafone 191, Nirshl, Perantucci, Rudy Meinl, Sanders, VMI, Willson, Yamaha larger models, York large models, and other large receiver tubas.
MEDIUM (EUROPEAN) SHANK:
Fits most older Mirafone 184, 185, 186, 188; also fits some other European tubas. Halfway between American and European. Will fit in most horns made for an American or European shank.
End diameter .520″ to .524″.
Most common size in North America. Used on Bach, most Schilke, and Conn Helleberg tuba mouthpieces. Designated with an L in the Denis Wick line. Also called PT S in Perrantuchi line.
Instruments – fits most Besson, Bohm & Meinl, Conn, Holton, Jupiter, King, Martin, Marzan, Meinl-Weston smaller models, Musica, Olds, Reynolds, Yamaha smaller models, York smaller models.
End diameter – about .550″.
Mouthpieces – Dillon Music “L” shank mouthpieces.
Instruments: Larger European tubas with especially horns with large diameter leadpipes like the “York” copies and most Alexander model 163 CC tubas.
End diameter about .585″.
Fits the largest Alexander model 164, a few ‘one off’ model 163’s, and some original York receivers. Rare.
Most tubas with a European receiver will accept an American shank mouthpiece, although some will “bottom out” on the leadpipe. However, pitch and slotting are often better with the correct shank. Tubas with an American Receiver will accept a European shanked mouthpiece, but the lack of correct penetration and increased gap will have also a deleterious effect on how it plays.