Compatible with Bernina (Bernette) Serger Models:
004D, 006D, 007D, 800D, 800DL, 1100D, MO334D, MO334 & MO334DS.

Compatible with Juki Serger Models:
MO334, MO334DS, MO634, MO634D, MO634DE, MO644D, MO654D & MO654DE.

This is for differential feed models.