Plastic Spool Pin Compatible with Singer Brand Home Sewing Machines. Part Number # : 173571 Compatible with Singer models : 1247, 1263, 1263N, 1280, 1280N, 1802, 1803, 1812, 185, 1852, 1853, 1862, 1872, 1873, 2302, 2303, 2304, 2313, 2315, 2330, 237, 239, 240, 242, 241, 2430, 2440, 247, 247AP, 248, 249, 250, 2502, 2503, 2504, 251, 2515, 252, 2530, 257, 258, 259, 263, 285, 288, 290, 292, 3101, 3102, 3103, 3105, 3130, 3140, 3314, 3317, 3343, 360, 362, 366, 367, 368, 417, 424, 547, 563, 6011, 6012, 6100, 6102, 6104, 6105, 6106, 611, 6110, 6112, 6114, 6115, 6116, 6120, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 631, 7100, 8109, 8209, 8214, 8222, 8700, 964, 966, 968, 972, 974, CE-350 Futura III Diameter is about 4.8mm and length is about 45mm You will receive 2 pins.