1、Kit Contents: Our T8x8 lead screw kit has 5 trapezoidal lead screws and 5 brass nuts. And these lead screws can replace the old or damaged parts 2、High Tensile Strength: The lead screws are cut accurately when making, no burrs and unevenness, and it is easy to install the slider. 3、Stainless Steel Material: The lead screw is made of high strength stainless steel with excellent craftsmanship and low noise. Low friction coefficient and high track accuracy. 4、Anti Corrosion and Rust: The lead screw brass nut kit has high overall hardness, anti corrosion, anti acid and anti rust. 5、Use Scenario: Lead screw brass nut kit is suitable for wind power generation, solar equipment, robotics, industrial automation, stepper motor guide, engraving machine, etc.