Sewing machine gear that fits models  401, 403, 404, 411 431, 500, 503, 600, 603, 604,609, 631, 620, 625, 628, 629, 630, 635, 636, 638, 639,640, 645, 646, 648, 649. 

PLEASE NOTE:  NO REFUNDS ON SEWING MACHINE PARTS. 
If you are unfamiliar with working on sewing machines, we recommend taking your machine to a local dealer.  We are unable to assist with repairing your machine.