About the product
- Set of 12 Class 66 threaded bobbins in plastic case
- Set of 12 threaded bobbins, 6 white and 6 black, for use in SINGER and other top drop-in bobbin machines
- Each bobbin contains 50 yards of 100% spun polyester thread
- Never add thread to a partially wound bobbin as it may be uneven and cause thread to tangle or break
- Includes reusable plastic storage case
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