Feature: 1. Compatible Models: These blades TF122 and TF123, fit various overlock sewing machines, providing you with versatility and convenience for different projects. 2. High Accuracy Cutting: Crafted from steel, these incisive blades effortlessly cut through various fabric thicknesses, ensuring clean, accurate edges for a professional looking finish every time. 3. Long Lasting: Engineered with advanced treatments, these blades resist wear and erosion, prolonging their life and minimizing replacement frequency. 4. Easy Installation: Designed for user friendly adjustment, these blades allow for seamless installation on your overlock machine, enhancing efficiency and making adjustments quick and straightforward. 5. Enhanced Efficiency: With incisive edgings and accurate cutting, these blades accelerate your overlocking speed, providing improved efficiency in every sewing project and ensuring beautifully finished fabric edges. Specification: Item Type: Sewing Machine Upper and Lower Blades Material: Steel . Package List: 1 x Upper Blade 1 x Lower Blade