Product: SINGER 2141 Class 66 Bobbins, Transparent, 4-Count
Brand: SINGER
Color: Transparent
Set of 4 class 66 transparent plastic bobbins
Class 66 bobbins are compatible with many Singer models and other top drop-in bobbin sewing machines
Never add thread to a partially wound bobbin as it may be uneven and cause thread to tangle or break

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