Features: 1.Made of high?quality materials, overlock blades durable and has a long service life, corrosion resistant and burr?free, high strength, durable. 2.When the fabric of the clothes is cut into small pieces, you need to use household sewing blade to sew the edges of the fabric to prevent the fabric threads from spreading. 3.The overlock sewing machine plays an important auxiliary role for the edge banding, and at the same time can help us to position it well. 4.Made of stainless steel, high quality, good sewing machine accessories can make your work more efficient. 5.Easy to install and easy to use, overlock blade can perfectly replace old or broken ones. specification:Item Type: Serger Sewing Machine Material: Stainless Steel Product s: One Set Product Use: Household Scope of Application: Most Overlock Sewing Machines PackageList:1 xUpper Blade 1 xLower Blade