Features: Upgraded with thickened alloy, this sewing machine bobbin resists corrosions and deformation, ensuring long time performances for high frequency sewing tasks. Engineered universals fit most sewing machine models, eliminating the hassle of mismatched bobbins across brands. Ideal for home craft, professional tailors, and multiple machine workshops requiring thread management solution. For garment construction and home decoration projects demanding frequent bobbin changes, boosting workflows efficiency with easy installation. Recyclable alloy construction promotes sustainable crafting while maintaining rotation for consistent stitching. Specifications: Materials: Alloy Size: 2.2x0.7cm/0.87x0.28inch Package Includes: 3pcs Round Bobbin note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color