UÑA DE REMALLADO SINGER : 14HD854, 14U544, 14U554, 14U555, 14SH654, 14SH644, 14HD854, 14CG754 & 14CG744. SILVERCREST MOD SON90A1 COMAPTIBLE CON: SINGER : 14HD854, 14U544, 14HD854, 14U554, 14U555, 14SH654, 14SH644, 14CG754 & 14CG744. PFAFF 4762. COD. 93-415504-50/000 COD. 550450 - - - - - - - - - - - - - - - - - - - - - - - - Chaining Tongue, Pfaff, Singer #550450 Item Number: 550450 Compatible with SILVERCREST MOD SON90A1 Compatible with Pfaff Serger Models: 4762. Compatible with Singer Serger Models: 14U544, 14U554, 14U555, 14SH654, 14SH644, 14CG754 & 14CG744. Alternative Part Numbers Include 93-415504-50/000