This set of 4 drive gears is made of high-quality durable plastic. Suitable for Singer sewing machines, it is an ideal replacement set. This gear set includes: 174491 large feed shaft, 174488 long feed, 163997 hook feed, and 163328 feed shaft vertical feed. The long feed gear 174488 can be replaced by models 153490, 313920, and 422408. Fits Singer models: 1030, 1036, 1425, 1482, 1485, 1486, 1488, 1490, 1492, 2000, 2001, 2005, 2010, 2102, 2105, 2106, 2108, 2110, 2112, 2114, 21142, 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. Fits 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 fits 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, and 6705.