This set of 4 drive gears is made of high-quality durable plastic and is suitable for Singer sewing machines, making it an ideal replacement set. The gear set includes: 174491 large feed shaft, 174488 long feed gear, 163997 hook drive gear, and 163328 feed shaft vertical gear. The long feed gear (174488) can be replaced by models 153490, 313920, and 422408. Compatible with Singer models: 1030, 1036, 1425, 1482, 1485, 1486, 1488, 1490, 1492, 2000, 2001, 2005, 2010, 2102, 2105, 2106, 2108, 2110, 2112, 2114, 2302, 2303, 2304, 2315, 2330, 2404, 2430, 2502, 2503, 2504, 2515, 2530, 2623, 2638, 2662, 2712, 2718, 2722, 2724, 2730, 2732. The large transmission gear (174491) can be replaced by models 177491 and 422325. Compatible with Singer models: 290, 495, 500, 501, 502, 503, 507, 509, 510, 513, 514, 518, 522, 527, 530, 533, 534, 538, 543, 553B, 554B, 714. The hook drive gear (163997) is compatible with Singer models: 417, 502, 518, 620, 625, 628, 629, 630, 630E, 635, 636, 638, 639, 640E, 646, 648, 648E, 649, 714, 719, 724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 834, 900-3, 920-3, 925, 935U, 1036, 12000, 20500, 6704, 6705.