Common dimension: the sewing needle inserters common size, easy and convenient for handling For threading, it can help pass thread through the needle eye conveniently, in case of poor eyes or poor lighting; For inserting, it holds needles firmly to prevent falling while changing needles. It is suitable for all kinds of household multifunctional sewing machines without automatic threading, meanwhile, some old sewing machines can also use it. Color: blue and white Material: plastic Size: 7cm Package Contents: 3 x Needle threader Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Common dimension: the sewing needle inserters common size, easy and convenient for handling For threading, it can help pass thread through the needle eye conveniently, in case of poor eyes or poor lighting; For inserting, it holds needles firmly to prevent falling while changing needles. It is suitable for all kinds of household multifunctional sewing machines without automatic threading, meanwhile, some old sewing machines can also use it.