Durable material: This threading tool is made of high-quality plastic and metal, durable material, not easy to break, and can be used for a long time. . Product use: It is used to quickly thread and change needles of sewing machines, selvedge machines, interlock sewing machines, etc., and peripheral accessories of sewing machines can easily pass the thread through the eye of the needle, avoiding the trouble of bad eyesight or poor lighting. When using this aid, you can hold the needle firmly so as not to drop it. . Scope of application: suitable for all household multi-function sewing machines without automatic threading function, some old-fashioned sewing machines are available, please contact customer service for details. . How to use: When you thread the thread, first insert the thread into the V-groove of the threader. Secondly, place the V-shaped groove on the needle above the eye of the needle thirdly, gently slide the needle threader down the needle until the needle of the needle threader enters the eye of the needle. . Service Guarantee: If you have any questions or are not satisfied with our products, please feel free to contact us, we will efficiently solve your problems. .