Material: Made of high quality aluminum alloy, resistant to wear and deformation, surface anodizing treatment.
Easy to Install: Already assembled,you don't need to assemble it by yourself,direct installation and ready to use.
ompatible: 2020 X-axis belt tensioner and 4040 Y-axis belt tensioner for Ender 3 Pro/ Ender 3 V2/CR-20 Pro etc.
Very useful upgrade parts for series printer, you can adjust the belt freedom, more better than original. Easier to adjust belt, higher precision and better printing effect. The X-axis and Y-axis belt can be adjusted at any time by turning the screw by hand.
Pckage Content:1*2020 X axis belt tensioner & 1*4040 Y axis belt tensioner.