Bell Screw, Universal Sousaphone & Tuba, 1/4 x 20, Brass or Silver

Aftermarket universal older Conn sousaphone & tuba bell screws.  Does not fit everything, these have1/4"-20 threads.  Sold individually.  Contact me if you wish to verify your model's fit or you need other parts.

20J, 21J, 24J, 25J, 14K, 20K