This set of 4 hook gears is a perfect combination, including all necessary components for the sewing machine: 174491 large feed shaft gear, 174488 long feed drive gear, 163997 hook drive gear, and 163328 hook gear. Made of high-quality materials for durable performance. This replacement feed gear set is compatible with Singer models 630E, 635, 636, 638, 639, 640E, 646, 648, 648E, 649, 714, 717, 778, 834, 900-3, 920-3, 925, 935U, 1036, 1200, 2000, 2001, 2005, 6704, and 6705. The 174488 long feed drive gear is compatible with 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, 2712, 2718, 2722, 2724, 2730, 501, 502, 503, 507, 509, 510, 513, 514, 518, 522, 527, 530, and 533. The 174491 large feed shaft gear replaces 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, 720, 724, 734, 920-3, 925, 1021, 1022, 1030, 1036, 1221, 1425, 1482, 1485, 1486, 1488, 1490, 1492, 2000, 2001, 2005, and 2010.