Function: 1. Stainless Steel: This large bobbin winder is made of premium stainless steel, which is solid, durable and rust-resistant. 2. Easy Installation: This industrial bobbin winder is easy to install and convenient to use, bringing you great convenience. 3. Reasonable Size: This industrial sewing machine bobbin winder has reasonable size and light weight, easy to store and carry. 4. Essential Part: This bobbin winder also features exquisite workmanship and shiny surface, which is an essential part of the industrial sewing machine. 5. High Practicality: This stainless steel bobbin winder is suitable for industrial flatbed sewing machines and synchronous sewing machines. Specification: Item Type: Large Bobbin Winder material: stainless steel Product specification: 1 piece Application: accessories for sewing machines Suitable for: industrial flatbed sewing machine, synchronous sewing machine Product Size: Approx. 29 x 8 cm / 11.41 x 3.15 inch (manual measurement, there may be a slight error) Package List: 1 x Large bobbin winder