6 Tubs of 50 Metal Machine Bobbins Style 66k
Fits most older Singer domestic sewing machines where the bobbin is dropped in from the top, the Singer compatible spools have a slight arc on the top and bottom are made of plastic and usally called 66k type drop-in bobbins.
Available in other pack sizes:
SKU: 75021 10 Retail cards of 6 bobbins
SKU: 75031 10 Hang Packs of 8 bobbins
SKU: 75028 1 box of 100 bobbins
SKU: 75045 6 Tubs of 50 bobbins