Fangrui Product Details Upgrade Kit:enhances Precision With 310mm Linear Guide Rails For Smoother X-axis Movement. Enhanced X-axis Precision: This Upgrade Kit Significantly Boosts The X-axis Accuracy Of Your Printer, Effectively Minimizing Layer Misalignment, Offsets, And Distortions In Taller Prints. A Must-have For Achieving Flawless High-resolution Models. Robust Construction: Crafted From Premium Materials, This Kit Offers Exceptional Strength And Durability. Its Engineered To Your Existing Setup Seamlessly, Ensuring Extended Operational Life And Consistent Performance Under Rigorous Use. Compatibility:fits A Wide Range Of 3d Printers, For Ender3, Ensuring Versatility And Easy Installation. Ease Of Use:easy To Install With No Need To Remove The Slider, Minimizing Downtime And Hassle. Type: Linear Slide Rail Guide Due To Different Batches, There May Be Differences In Product Appearance, Color, And Printed Text, Which Will Not Affect The Use. Colour:as Shown Material:metal Package Contents: 1 X Linear Rail Slide Upg