CUCHILLA FIJA / INFERIOR HUSQVARNA S15 COMAPTIBLE CON: PFAFF 4762 & 4772 SINGER 14U544, 14U554, 14U555, 14CG744, 14CG754, 14SH644, 14SH654, 14SH744 & 14SH754 . . . . . . . . Lower Knife, Pfaff, Singer #550449 Compatible with Pfaff Serger Models: 4762 & 4772. Compatible with Singer Serger Models: 14U544, 14U554, 14U555, 14CG744, 14CG754, 14SH644, 14SH654, 14SH744 & 14SH754 ----------------------------------------------------------- ower Knife, Singer, Pfaff, hUSQVARNA #550449 Lower Knife, Singer #550449 Details Guaranteed to fit Consew Sewing Models: 14TU5432, 14TU854, 14TU857 Guaranteed to fit Husqvarna Viking Serger Models: Huskylock S15 Guaranteed to fit Pfaff sewing machine models: 4762 (Hobbylock), 4772 (Coverlock), Hobbylock 2.0 Guaranteed to fit Singer sewing machine models: 14CG744, 14CG754 Pro Finish, 14HD854 Heavy Duty, 14SH644, 14SH654 Finishing Touch, 14SH744, 14SH754, 14SH764 Stylist, 14U544, 14U554, 14U555, 14U557, 85SCH Alternate Part Numbers: 93-415504-49/000, 416325901