Lacquer screw, cork, spring (cut to proper length)

Fits:

B1105TH Bach  Marching Mellophone  Professional
B1106S Bach  Marching Baritone  Professional
B1105THS Bach  Marching Mellophone  Professional
B1106 Bach  Marching Baritone  Professional
TR300H2 Bach  Bb Trumpet  Student
CR301H Bach  Cornet  Student
136ESP Conn  Marching Baritone  Intermediate
134E Conn  Marching French Horn  Intermediate
134ESP Conn  Marching French Horn  Intermediate
136E Conn  Marching Baritone  Intermediate
22A Conn  Cornet  Student
34A Conn  Cornet  Student
35A Conn  Cornet  Student
34ASP Conn  Cornet  Student
23BN Conn  Bb Trumpet  Student
23B Conn  Bb Trumpet  Student
23BSP Conn  Bb Trumpet  Student
27B Conn  Bb Trumpet  Student
2166 King  Valve Trombone  Professional
1129 King  Marching Euphonium  Professional
1124 King  Marching Baritone  Professional
1127SP King  Marching Baritone  Professional
1129SP King  Marching Euphonium  Professional
1122SP King  Marching French Horn  Professional
1124SP King  Marching Baritone  Professional
1121SP King  Marching Mellophone  Professional
1127 King  Marching Baritone  Professional
1121 King  Marching Mellophone  Professional
1122 King  Marching French Horn  Professional
603 King  Cornet  Student
604 King  Cornet  Student
602SP King  Cornet  Student
301 King  Bb Trumpet  Student
603SP King  Cornet  Student
602 King  Cornet  Student
605SP King  Cornet  Student
605 King  Cornet  Student
604W King  Cornet  Student
600 King  Trumpet  Student
601 King  Bb Trumpet  Student
601SP King  Bb Trumpet  Student
601N King  Bb Trumpet  Student