Upgrade Kit:Enhances precision with 310mm / 375mm 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. It's engineered to replace your existing setup seamlessly, ensuring extended operational life and consistent performance under rigorous use. Compatibility:Fits a wide range of 3D printers, for Ender3 / CR10, 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<br><br>Package Contents: 1 x Linear Rail Slide Upgrade Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.