Common Part (Serger) - Upper Looper (Pfaff 4764, MANY White Models)
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Pfaff Serger Models:
4764
White Serger Models:
1700, 1800, 1900, 634D, 7234, 7934DW, 834DW, SL234D, SL234DE, SL3400, SL34, SL34D, WW6000
Alternate Part Numbers: 11937