This set of 4 drive gears are made of 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, 163328 feed shaft vertical feed. Long Feed Gear 174488 can be replaced by the following models: (153490, 313920 and 422408). Fits Singer Models: 1030, 1036, 1425, 1482, 1485, 1486, 1488, 1490, 1492, 2000, 2001, 2005, 2010, 2112, 2102, 2105, 2106, 2108, 2110, 2114, 21 14, 2114 2114, 2114, 2114, 21142, 21142, 21142, 21142, 21142, 2302, 2303, 2304, 2315, 2330, 2404, 24 30, 2502, 2503, 2504, 2515, 2530, 2623, 2638, 2662, 2662, 2662, 2662, 2662, 2662, 2662. 2662, 2712, 2718, 2722, 2724, 2730.2732, 174491 The large Transmission Tree can be replaced by the following models: (177491, 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, 714, 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, 7 14 , 71. 7 School, 719, 724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 834, 900-3, 920-3, 925, 935U, 1036, 12000, 20000000000, 20500, 20500, 6704 & 6705