Brass trombone handslide crook. Fits Conn, Olds, King, Getzen, and many others. Crook will fit most models if braces are adjusted to match.
SPECIFICATIONS:
- Bore: 0.530" (13.46mm)
- Center to center distance between pipes: 3.35" (85mm)
- Wall thickness: 0.020" (0.51mm)