Feature:1. The upper blade is made of stainless steel which is strong wearresistant and corrosionresistant and has a long service life.2. The moving knife has fine workmanship bright and shiny appearance and is safe and burrfree.3. The glossy exterior treatment allows it to run smoothly on rough materials without damaging the fabric.4. The blade is small in size easy to install does not occupy the sewing machine space and does not hinder operation.5. This blade is an automatic thread cutting blade for sewing machines which is suitable for most industrial sewing machines.Spec:Item Type: Upper KnifeMaterial: Stainless SteelFunction: Replace the old and damaged roller sewing machine upper knifeApplication: Most industrial sewing machine modelsPackage List:1 x Upper Knife