HONEYSEW Upper knife 412585 & Lower Knife 550449 For Singer 14CG754 Pfaff 4762 4772 Babylock Serger Machine SINGER 14CG744 14CG754 14SH644 14SH654 14U544 14U554 14U555 14U557 UPPER +LOWER KNIFE SET UPPER KNIFE #412585 LOWER KNIFE #550449 For pfaff 4762, 4772, Hobbylock 2.0