Guaranteed to fit Bernina (Bernette) Serger Models:
004, 004D, 006D, 007D, 009D, 800D, 800DL, 1100D, 1100DA, 1200MDA, 700D, 800D, 800DL, MO334, MO334D, MO334DS

Guaranteed to fit Juki Serger Models:
MO-334, MO-334DS, MO-634, MO-634D, MO-634DE, MO-644D, MO-654D, MO-654DE