Feature: 1. Carbon Steel Construction: Our blades are crafted from carbon steel, offering exceptional toughness and strength to withstand heavy workloads without bending or breaking. 2. Easy Replacement: Designed for quick and easy replacement, these blades minimize maintenance time, enhancing your workflow and making sewing projects more efficient and enjoyable. 3. Versatile Compatibility: These blades are compatible with popular models such as for Serger S0230, S14 78, and for Millepunti MLD42, ensuring seamless integration into your sewing machine setup. 4. Enhanced Sewing Performance: With our blades, experience improved cutting accuracy and smoothly fabric handling, elevating the quality of your sewing projects to professional standards. 5. Durability Assured: Engineered to endure the rigors of heavy sewing tasks, our blades maintain their sharpness and integrity over time, providing long lasting reliability for all your sewing needs. Specification: Item Type: Sewing Machine Upper Lower Blades Set Material: Carbon Steel Application: for Serger S0230 S14 78 for MILLEPUNTI MLD42 . Package List: 1 x Upper Blade 1 x Lower Blade