Features: Achieve durability and precisions with this metal kit, ensuring a reliable printing experience for all projects. Crafted from quality materials, this kit provides sturdiness and reliability throughout the printing process. Not easy to deformed and wear-resistant Suitable for 3D printing field, this kit caters to a wide user base. With easy installation constructions, you can tackle even the most challenging 3D printing projects with confidence. Specifications: Lead screw length: about 350mm/13.78in Model Type : Double Z Upgrades Kit Color: As Pictures Material: Metal For 3D Printers Package Includes: 1Set Double-Z Upgraded Kit note: Due to the problem of lighting effects and shooting angle, there nightbe tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurment.