Feature: 1. Metal: These thread tension assemblies are made of high-quality metal material, ensuring strength and reliability. 2. Glossy Surface: These M700 thread tension components feature a smooth, glossy surface free of scratches, enhancing performance. 3. 4 Pieces: Pack includes 4 overlock sewing machine thread tension assemblies, providing sufficient quantity for regular use. 4. Long Service Life: Designed for durability, these thread tension assemblies offer extended use under normal conditions. 5. Time Saving: These thread tension assemblies support efficient sewing operations, helping to streamline the sewing process. Specification: Item Type: Thread Tension Assembly Material: Metal Quantity: 4 Pieces Application: Suitable for household sewing tasks Compatibility: Fits most standard overlock sewing machines Product Size: Approx. 4cm / 1.57in (manual measurement, slight variation may occur) Package List: 4 x Thread Tension Assembly Note: Please note that new and old versions of this product may be shipped at random. Ensure you are comfortable with this before placing your order.