Guaranteed to fit Pfaff Serger Models:
756

Guaranteed to fit Singer Serger Machine Models:
14U23, 14U234, 14U234B, 14U286, 14U286B, 14U34(14U34B), 14U344, 14U344B, 14U354, 14U354B, 14U44, 14U444, 14U444B, 14U454, 14U454B, 14U46, 14U46B, 14U64, 14U64A, PRO4D

Alternate Part Numbers: 93-414127-30