3 Screws included

Size 3x48 threads

BACH MODEL 883 MARCHING TROMBONE
BACH MODEL 888 MARCHING BARITONE
BUNDY/BACH MODEL 1566 & 1567 BARITONE HORN
BACH MODEL 869 - 3 VALVE & 879 - 4 VALVE BBb TUBA
OLDS FLUGEL HORN (L-12)
Olds VALVE TROMBONE (O-20)
OLDS BARITONE HORN PARTS A-25, A-30, A-31, A-35, T-25, T-26 & T-30
Conn DIRECTOR BARITONE HORN MODEL 14I BELL FRONT & 15I BELL UP
4 VALVE EUPHONIUM MODELS 4I & 5I
ARTIST EUPHONIUM MODEL 10I & CONNSTELLATION MODEL 24I
Conn MODEL 10J – BBb TUBA (Before 1985)
Conn some MODEL 14K (Elkhart Production) - Pre 1985