Made of high-quality plastic and metal, it is durable and not easy to break, and can be used for a long time. Dimensions: Each threading tool is about 7.5 centimeters/3 inches long, with a diameter of about 1 centimeter/0.4 inches. Easy to operate: The size of the sewing needle inserter is average, and the operation is simple and convenient. Dual function: When threading, it can help the thread easily pass through the needle eye; For insertion, it can firmly fix the needle head to prevent it from falling during needle replacement. Widely used: Suitable for various household multifunctional sewing machines without automatic threading. 3 packs of automatic threading machines. Plastic threading tools. Product name: Automatic threading material: Plastic color: Blue size: 7.5CMC characters. Suitable size makes it easy to use and easy to operate. The threading machine will be a good helper for your sewing work, It can help you automatically thread in poor light conditions and prevent vision loss. Threading method c: 1. Firstly, insert the wire into the V-shaped groove of the threading device; 2. Secondly, place the V-shaped groove on the needle head directly above the needle eye; 3. Thirdly, slide the threading device into the needle head and gently push it until the threading needle enters the needle eye packaging, which contains the 3 X needle threading device