Singer 36ct Class 15 Threaded Bobbins in Case Sewing Notion (Set of 36)

This set of 36 class 15 threaded bobbins can be used in any other manufacturer’s sewing machines. The pack contains 18 black-threaded bobbins, with 50 yards of thread in each, and 18 white threaded bobbins, with 50 yards of thread in each. The reels come in a reusable plastic case. All thread is 100% spun polyester. Consult your machine’s manual to ensure the correct bobbin size. Never add a thread to a partially wound bobbin, as it may be uneven and cause the thread to tangle or break.