Plastic sided prewound bobbin threads have clear plastic sides that will not distort or absorb machine oils
Most common type of bobbins for home sewing machines
Fit most Babylock, Brother, Janome, Kenmore, Singer and many more sewing machines using Class 15 (Size A) bobbins
25 bobbins (12 white thread, 13 black thread)
100% spun polyester thread
High quality storage box is made of transparent PP material, environment friendly, durable and sturdy, practical and broken-resistant
Each bobbin with one compartments, very organized with each bobbin in a separate spot, easy to remove and use.
Bobbin measurement : 20mm diameter X 10mm height.

25 Pk. White & Black Prewound Class 15 Bobbins with Bobbin Storage Box