X Y Linear Rails for Creality Ender 3 Max 3D printer Size:Y bracket only （Without guide rails） and Neptune 4 MAX) that

and Neptune 4 MAX) that have already been upgraded with a dual Z-axis synchronous belt

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Neptune 4 Diagonal Brace Kit：Including mounting brackets (three types

Z-axis upgrade guide rail kit： Replace the POM wheels in the Z-axis direction with linear guides

The difference lies in the rail brand

X Y Linear Rails for Creality Ender 3 Max 3D printer Size:Y bracket only （Without guide rails） and Neptune 4 MAX) thatProduct 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 rails and sliders are made of high carbon chromium bearing steel and use electroplating rust prevention technology, with high hardness, wear resistance, smoothness, and good rust prevention ability.. Y axis slide rail