Features 1.High-quality steel makes it strong and durable, and has a long service life. 2.Excellent workmanship, smooth and without burrs. 3.Perfect replacement for the old or the bad,easy to install and use. 4.Corrosion resistance, high strength and durability. 5.A good sewing machine accessories to make your work more efficient. Specification Features: High-quality steel makes it strong and durable, and has a long service life. Excellent workmanship, smooth and without burrs. Perfect replacement for the old or the bad,easy to install and use. Corrosion resistance, high strength and durability. A good sewing machine accessories to make your work more efficient. Specification: Item Type:Serger Machine Knife Material:Metal Upper Knife Code:412585 Lower Knife Code:550449 Fitment: Fit for Singer Overlocker Fit for BABYLOCK SERGER MODELS-BL202,BL302,BL400 Fit for CONSEW:14TU854 Fit for ELNA SERGER MODELS:T-3,T-33,T-34,T-34D Fit for SERGE-MATE SERGER MODELS:300,430,SW432,4350D,5030,5949L Upper Knife Size(L x W):4 x 0.6cm / 1.57 x 0.24in Lower Knife Size(L x W):2.5 x 0.6cm / 0.98 x 0.24in Package List: 1 x Upper Knife 412585 1 x Lower Knife 550449 Package List When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don''''''''''''''''''''''''''''''''t hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!