Feature: 1. Made of good-quality materials, durable with bright color, polished surface is not easy to rust 2. These practical parts have a smooth surface, no scratches, and will not wipe the threads, which greatly improves your work efficiency 3. Convenient to carry and replace, keep at home can be used to replace the thread tension of household sewing machine 4. This thread tension regulator assembly is suitable for most household multifunctional sewing machines 5. Using advanced technology with excellent craftsmanship to bring perfect finish, which will not hurt your hands in work Specification: Item Type: Sewing Machine Thread Tension Specifications: One set Material: Plastic, iron Use: Replace and update the thread tension of household sewing machine Scope of Application: Most household multifunctional sewing machines Package List: 2 x Sewing Machine Thread Tension