Item # 4032

3 springs, CHECK MODEL BELOW and use picture to verify Spring Size.

Fits most serial numbers in the following models:

52BSP Conn  Bb Trumpet
52B Conn  Bb Trumpet
134E Conn  Marching French Horn
134ESP Conn  Marching French Horn
2220SP King  Cornet
2220 King  Cornet
1122SP King  Marching French Horn
1117 King  Bb Trumpet
1117SP King  Bb Trumpet
1121SP King  Marching Mellophone
1121 King  Marching Mellophone
B1105TH Bach  Marching Mellophone
1122 King  Marching French Horn
055S - Silver Flair King  Bb Trumpet
B1105THS Bach  Marching Mellophone
2020SP King  Flugelhorn
51BSP Conn  C Trumpet
51B Conn  C Trumpet
2020 King  Flugelhorn
603 King  Cornet
604 King  Cornet
602SP King  Cornet
603SP King  Cornet
22A Conn  Cornet
602 King  Cornet
605SP King  Cornet
605 King  Cornet
34A Conn  Cornet
CR301H Bach  Cornet
35A Conn  Cornet
600 King  Trumpet (some models, internal piston spring)
34ASP Conn  Cornet
601 King  Bb Trumpet (some models, internal piston spring)
601SP King  Bb Trumpet
601N King  Bb Trumpet
23BN Conn  Bb Trumpet
23B Conn  Bb Trumpet
23BSP Conn  Bb Trumpet