Description Crafted from steel, this bobbin case spring is designed to enhance the performance of industrial sewing machines. The durable material ensures tension control, making it ideal for precision stitching tasks. Its sleek design seamlessly integrates into various sewing machine models for optimal functionality. Features -Color:Grey -Material:Steel -Size:2.20X1.30X0.02cm/0.86X0.51X0.01in -Diameter: 2.1 cm -Precision spring design: engineered for stable operation in computerized sewing machines, enhancing stitching accuracy and overall efficiency during use -Durable steel material: made from high strength steel, ensuring extended lifespan and reducing the hassle of frequent replacements -Versatile application: suitable for various sewing tasks, whether for home use or industrial production, providing reliable performance in all scenarios -Optimal elasticity: designed with balanced tension to ensure smooth bobbin movement, preventing thread skipping and breakage issues -Noise reduction feature: professional grade shim design minimizes noise, creating a quieter working environment for improved comfort and focusPackage list: 100 x Bobbin Case Springs