Precisely engineered with standardized dimension and clear visibility, each empty thread bobbin fit on most household/domestic sewing machines while allowing easy of thread levels Crafted from this pack of 10Pieces clear sewing thread bobbins long term reliability for smoothly thread management in any sewing project The smoothly edges and clear construction minimize thread snags and breaks, enhancing sewing efficiency while providing value through repeated reuse Essential sewing machine accessories for garment repair, clothing, dressmaking, quilting project, or creative sewing craft, these multifunctional bobbins maintain color and shape through extended use Designed for both beginner mastering basic stitching skills and seasoned sewers tackling complex pattern, these clear thread bobbins simplify thread handling across various sewing machine models