These plastic Touch bobbins are designed specifically for Singer sewing machine models including 290C, 600, 603, 604, 620, 625, 626, 628, 630, 635, 636, 638, 640, 645, 646, 648, 728, 737, 750, 755, 756, 758, 770, 771, 775, 778, 1000G, 1040G, 1060, 1100, 1411N, 1411U, 1425N, and 1425U. They ensure reliable thread tension and smooth operation. This pack includes three bobbins, perfect for maintaining sewing efficiency and workflow.
