Upgrade 2040 Profile Y-axis Synchronous Belt Stretch Straighten Tensioner for CR-10/CR10S/CR-10 V2/ CR-10 V3 3D Printer Parts 2040. Easy to Install: 2040 aluminum extrusion belt tensioner already assembled,you don't need to assemble it by yourself, No need to change the belt length,direct installation and ready to use.
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