1 Made of iron material, with durable and practical characteristics, and can be used for a long time 2 Effectively prevent the bobbin thread from unraveling or tangling when the sewing operation stops and starts 3 Can always be used as a replacement part for the bobbin system sewing machine, and can also be used as a spare accessory 4 Suitable for common household sewing machines to help your machine operate normally and speed up your sewing speed 5 As an auxiliary sewing machine accessory, suitable as a gift for grandma, mother or other sewing lovers
What's in the box
3 x Bobbin Case
