Bobbin Singer 203470 - for the Machines Singer 21W,4,5,6,30:35,100,101,102,162,180,182, 22W, 312T141,U, U171, 46W,61,62, 47W,62,63,70,51W51,52, 52W30,31, 72W12, 110K,110W,124,128, 111G, 111W, 100:113,150,151, 112G127,139, 112W110:139,140,145,146, 131W,103:113, 134W, 138G101,102,103, 138W(101),103, 153K,W,168G,W, 211A157JA, 165JA, 166JA,166KA, 212A141BA,GA 180W201,202; Equivalents: 233939, CH455964H01; Steel bobbins Singer 203470.