Part # 125314 high quality tension springs.
For SINGER 201, 201-2, 221 Featherweight, 222, 223, 237, 239, 240, 241, 242, 247, 247AP, 248, 250, 251, 252, 257, 258, 259, 288, 293B, 301, 337, 338, 348, 401, 416, 500, 502, 503, 507, 509, 513, 514, 518, 522, 527, 533, 534, 538, 543, 600, 603, 604, 620, 620E31, 625, 626, 628, 629, 630, 630E, 635, 636, 638, 639, 640E, 645, 646, 649, 1200-1, 1247, 1280, 1288, 1802, 1803, 1812, 1852, 1862, 1872, 1873, 2404, 2430, 2732, 3101, 3102, 3103, 3105, 4522, 4525, 4526, 4528, 4530, 4538, 4825, 4828, 4830, 6011, 6012, 6021, 6102, 6104, 6105, 6106, 6110, 6120, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 6201, 6202, 6211, 6212, 6214, 6215, 6217, 6221, 6513, 6522, 6528, 6533, 6543, 6544, 6548, 6606, 7025, 7101, 8019, 8502, 8505, 8518, 8602, 8605, 8606, 8610, 8614, 8618, 9900