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1pcs Z Axis Height Adjuster. Focusing is More Convenient: Just turn the knob to adjust the height of the z-axis laser-module. It can remove all excess play between the laser-and the project.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.