Class 15 – Class 15 bobbins are used in over 75% of all home sewing machines in use today.
The Singer Transparent Plastic Class 15 Bobbins are constructed from premium quality plastic.
They are compatible with all branded sewing machines, which require the use of 15 Class bobbins.
Engineered to perfection, they offer consistent bobbin winding for great results. Featuring a see-through body, you can keep a check if it is running low so that it can be reloaded.


- EverSewn Sparrow 15, 20, 25, ES-C100 Charlotte,
- Juki HZL-25Z, HZL-355ZW, HZL-E80, HZL-F300, HZL-F400, HZL-F600, HZL-T100,
- Pfaff Ambition 1.0, Pfaff Ambition 1.5, Pfaff Passport 2.0,

Guaranteed to fit Singer Sewing Machine Models: 1105, 1107, 1116, 1120, 1130, 117 Featherweight, 117 Plume, 1409, 140Q, 1507, 1512 Promise II, 15-125, 1525, 15-30, 15-86, 15-87, 15-88, 15-90, 15-91, 15-96, 15-97, 15CL, 1732, 1748, 2010 Professional, 2010 Superb, 2050, 223, 2250, 2259, 2263, 227, 2273, 2277 Tradition, 228, 2282, 2300, 237, 239, 2623, 293B, 2932, 3001, 3002, 3003, 3004, 3005, 3011, 3012, 3013, 3014, 3015, 30215, 30518, 31-15, 3116 Simple, 3208, 3214, 3232, 331K, 331K1, 331K16, 331K4, 331K5, 331K6, 3337, 3709, 3810, 3820, 3825, 3860, 4001, 4002, 4005, 4006, 4009, 4011, 4012, 4015, 4016, 4019, 4022, 4166, 44S Classic Heavy Duty, 4423 Heavy Duty, 4452, 4624, 5101, 5102, 5107, 5122, 5123, 5124, 5127, 5502, 5504, 5505, 5508, 5522, 5524, 5525, 5528, 5532 Heavy Duty, 6408, 6412, 6416, 6423, 6510, 6550, 7100, 7312, 7322, 7350, 7360, 7380, 75FW, 8060, 8090, 8275, 8280, 9803, 9805, 9806, 9808, 9814, 9816, 9818, 9832, 9910, 992DE, 9920, 9940, 9960, 9985, CP17, Featherweight C240, FW75 Featherweight, H74, Quantum LE, S10, XL100, XL1000, XL150, XL2021, XL3400, XL5000, XL6000
Can also be used in other drop-in bobbin machines models

Never wind thread onto a bobbin that already has thread on it.
If there is thread already on a bobbin and you need to use a different color or thread type then use a different bobbin or remove the existing thread from the bobbin before you wind new thread.
The reason is that the end of the existing thread may get tangled in the new thread and jam your bobbin or cause other problems and also the new thread will not wind evenly over the old thread and therefore will not unwind evenly during use and will cause tension problems.

Center tail – After you wind a bobbin you must cut off the end of the thread that is coming out from the center of the bobbin.
This must be cut off close to the bobbin so that there is no tail of thread sticking out.
A thread tail can interfere with bobbin rotation and cause tension problems.

Over filled – Make sure your bobbins are not over filled with thread