Listed are known piston sizes. Casing sizes are generally .0015 larger.
| BRAND | COR/TPT | ALTO/MELLO. | V.TBN | BAR | EUPH | Eb TUBA | BBb TUBA |
|---|---|---|---|---|---|---|---|
| Conn, PanAm, Cont | .665/.682 | .714 | .714 | .828 | .888 | .888 | 1.048/1.223 |
| Bach, Mercedes 1 | .664 | .741 | .840 | ||||
| Benge | .658 | ||||||
| Besson—1st line | .685 | .776/.976 | .923 | 1.365 | 1.360/1.365 | ||
| Student line | .664/.684 | .684 | .775 | .864 | .939 | .978 | |
| Blessing | .645 | .724 | .842 | .920 | |||
| Boosey & Hawkes, Regent | .645 | .864 | .978 | ||||
| Bundy | .650 | .665 | .772/.840 | .978/1.062 | |||
| Buescher | .650/.682 | 1.062 | |||||
| Couesnon | .668 | ||||||
| Czechoslovakia | .674 | ||||||
| Deg, DynastyII | .836 | ||||||
| East German | .686 | .916 | |||||
| Getzen | .650 | .650 | .791 | .924 | |||
| Holton | .650 | .668 | .802 | .922 | .922/1.141 | ||
| Collegiate | .650/.668 | .791 | |||||
| New Colleg-Yamaha | .664 | ||||||
| Huttl | .672 | ||||||
| Imperial Creations,Pocket | .644 | ||||||
| Jupiter | .649 | .728 | .728 | .807 | .906 | 1.003 | |
| King | .660 | .660 | .737 | .835/.738 | .976 | ||
| Cleveland | .661 | .936 | |||||
| Leblanc | .660 | .660 | |||||
| Martin, Indiana | .660 | .715 | .812 | .812 | 1.015 | ||
| Meinl Weston | .916 | ||||||
| Mercedes II, Signet | .650 | .665 | .772 | 1.062 | |||
| Musica Austria | .637 | ||||||
| Olds | .665 | .665 | .738 | .839 | |||
| Orsi | .645 | .947 | |||||
| Reynolds by Olds | .664 | .664 | .738 | .839 | .975 | ||
| Reynolds by Reynolds | .660 | .832 | .976 | ||||
| Roth, Sears, RMC, Reynolds by Blessing,Wards | .645 | .837 | |||||
| Schenkelaars | .657 | .893 | .893 | ||||
| Schilke | .645 | ||||||
| Selmer | .661 | ||||||
| Shanghai | .660 | ||||||
| Windsor | .651 | ||||||
| Yamaha | .664 | .680 | 9.25 | .947 | 1.039/.947 | ||
| York | .631 |