Creality CR-M4 Upgrade Kit SIZE:Z-axis upgrade bracket (without guide rails) Z-axis Dual Synchronous Belt Kit:

Z-axis Dual Synchronous Belt Kit: Includes upper bracket

The linear guide rails and sliders are made of high-carbon chromium bearing steel and use electroplating rust prevention technology

auxiliary materials (screws

Installation instructions

Once installed

Creality CR-M4 Upgrade Kit SIZE:Z-axis upgrade bracket (without guide rails) Z-axis Dual Synchronous Belt Kit:Product features: 1. The installation base is made of aerospace grade aluminum alloy with CNC processing, good flatness and verticality, high dimensional accuracy, lightweight product, and reduced motor load. 2. The linear guide models : X axis, MGN 9H, length 540mm, with 1 MGN 9H slider; Quantity:  1 sets. 3. Easy to install, retaining as many original machine parts as possible, and the machine's motion size (printable size) will not be lost