Bass clarinet / saxophone lyre screw.

Fits bass clarinet models:

Jupiter 673BN

Jupiter 675

Jupiter 1000

Fits alto sax models:

Jupiter 667GN - after serial number 500000

Jupiter 767BL - after serial number 500000

Jupiter 767GL - after serial number 500000

Jupiter 869SG - after serial number 500000

Fits tenor sax models:

Jupiter 687GN - after serial number 500000

Jupiter 787BL - after serial number 500000

Jupiter 787GL - after serial number 500000

Jupiter 889SG - after serial number 500000