Feature:1. Perfect Alignment: The Industrial stainless steel bobbin winder allows seams to be perfectly aligned for your convenience.2. Save Time: Sewing bobbin winder as a part of sewing machine creates professional sewing process and saves time in the process of use.3. Stainless Steel: Automatic bobbin winder is made of stainless steel, wear resistant and durable, not easy to rust, not easy to damage, and can be used for a long time.4. Easy to Maintain: Sewing bobbin winder is odorless, dustproof, impermeable to water, easy to clean and harmless to health.5. Lightweight and Portable: Sewing bobbin winder is small and delicate, easy to carry and use, easy to install, convenient and fast to use, stable performance.Specification:Item Type: Automatic Stainless Steel Bobbin WinderMaterial: Stainless SteelProduct Use: Factory UseScope of Application: Most ScenesSize: Approx. 54 x 57mm / 2.1 x 2.2in.Package List:1 xAutomatic Stainless Steel Bobbin Winder