Feature●You will receive 5 spool caps, mostly enough for your daily application and replacement●A spool cap is a piece that attaches to a spool pin that holds the thread in place, helps the spool to relax properly, and doesnt jump around while youre using the sewing machine●The spool cap is made of high-quality material and will not deform and break easily, making it a good choice for backup.●The outer diameter of the spool cap is about 1 3/4" and will fit a 1/4" pin●As a sewing machine accessory, this spool cap fits Singer models 2102, 2105, 2106, 2108, 2110, 2112, 2114, 2118, 2517, 4530, 4552, 4572, 4600, 5705, 5710, 5812, 5814, 5816, 5818 , 5825, 5830, 5838, 6038, 6200, 7028, 7033, 7037, 9000, 9005, 9008, 9010, 9015, 9030, 9410, 57825, CM17, FM17 and 41SMDescription Suitable for various sewing machine cartridges