The Singer Class 15J Threaded Bobbins - Black & White will be perfect to use in Singer and other manufacturers’ sewing machines. This pack contains six black-threaded bobbins and six white-threaded bobbins, with 50 yards of thread in each. The reels come in a reusable plastic case. All thread is 100% spun polyester. Refer to your machine’s manual to check the correct bobbin size. Do not add the thread to a partially wound bobbin, as it may be uneven and cause the thread to tangle or break.

The Singer Class 15J Threaded Bobbins - Black & White will be perfect to use in Singer and other manufacturers’ sewing machines. This pack contains six black-threaded bobbins and six white-threaded bobbins, with 50 yards of thread in each. The reels come in a reusable plastic case. All thread is 100% spun polyester. Refer to your machine’s manual to check the correct bobbin size. Do not add the thread to a partially wound bobbin, as it may be uneven and cause the thread to tangle or break.