Features 1、Strong Compatibility: This buttonhole sewing machine curved needles are specifically designed for 9820, 980, 981, and 982, ensuring accurate integration without compatibility issues. 2、Alloy Material: Crafted from alloy materials, these sewing machine loopers undergo accurate machining, guaranteeing exceptional wear resistant, strength, and longevity for extended use. 3、Accuracy Engineering: Manufactured with high accuracy standards, the sewing loopers ensure accurate and stable performance, reducing failure rates and enhancing your production efficiency in every sewing project. 4、Easy Installation: Designed for convenience, these accessories can be installed and removed effortlessly without special tools, saving your time and effort while providing a user friendly experience. 5、Easy Carrying: The package comes with a storage box that can easily store these sewing machine needles in it, easy storage access and transportation. Specification Item Type: Lockstitch Machine Curved Needles Material: Alloy Application: for 9820, 980, 981, 982 Machines and more Package List 4 x Needles 1 x Storage Box