For 3018plus Milling Machine Upgrade 3018 to 3040 Y-AXIS Extension Rail Kit

Optical axis: φ12mm, 550mm length. 2 Optical axis 550mm length. Box Slider： φ12mm. This kit is update kit for CNC3018PLUS to CNC3040, Increase the Y-axis working area. Aluminum profile kit：. aluminum profile: 2040V 540mm.

eBay