This gear set is a replacement part compatible with various Singer sewing machine models. Made from high-quality materials, it ensures durability and reliable performance. The set includes four essential gears for proper sewing machine operation: 174491 large feed shaft gear, 174488 long feed drive gear, 163997 hook drive gear, and 163328 vertical shaft top gear. The 174488 long feed drive gear is compatible with models 153490, 313920, and 422408. The 174491 large feed shaft gear can be replaced with models 177491 and 422325. Compatible Singer models include: 1030, 1036, 1425, 1482, 1485, 1486, 1488, 1490, 1492, 2000, 2001, 2005, 2010, 2102, 2105, 2106, 2108, 2110, 2112, 2114, 2118, 2210, 2302, 2303, 2304, 2315, 2330, 2404, 2430, 2502, 2503, 2504, 2515, 2530, 2623, 2638, 2662, 2712, 2718, 2722, 2724, 2730, 2732, 2950, 290, 500, 501, 502, 503, 507, 509, 510, 513, 514, 518, 522, 527, 530, 533, 534, 538, 543, 553B, 554B, 560, 6100, 6102, 6104, 6105, 6106, 6110, 6120, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 6233, 6234, 6235, 7100, 7101, 7102, 7104, 7105, 7106, 7108, 7110, 7136, 7171, 7174, 714, 717 School, 719, 720, 724, 734, 737, 740, 750, 755, 756, 758, 760, 763, 764, 770, 774, 775, 776, 778, 800, 8100, 813, 814, 830, 834, 900-3, 920-3, 925, 935U, 9410, 9417, 838, 844, 1021, 1022, 1221, 9618, 417, 620, 625, 628, 629, 630, 630E, 635, 636, 638, 639, 640E, 646, 648, 648E, 649, 1200, 6704, and 6705. The 163997 hook drive gear is suitable for Singer models: 417, 502, 518, 620, 625, 628, 629, 630, 630E, 635, 636, 638, 639, 640E, 646, 646, 648, 648E, 649, 714, 717 School, 719, 724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 834, 900-3, 920-3, 925, 935U, 1036, 1200, 2000, 2001, 2005, 6704, and 6705. Constructed from durable plastic, the gear set is designed for long-term use. Package includes: 1 x 174491 large feed shaft gear, 1 x 174488 long feed drive gear, 1 x 163997 hook drive gear, and 1 x 163328 vertical shaft top gear. Note: New and old versions of this product may be shipped randomly. Please ensure compatibility and acceptability before ordering.