BZ 3D Ender 3 pro Y axis Belt Tensioner 4040 Stretch Straighten for Ender3 Pro/Ender V2 Printer.(Y4040)

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. High quality aluminum alloy material, Surface anodizing treatment. 4040Y-axis belt tensioner Compatible with Ender 3 Pro/Ender3 V2 3D Printer. Fine workmanship, wear-resistance and corrosion-resistance.Already assembled,you don't need to assemble it by yourself,just install and adjust the timing belt to use. After-sales guarantee: each defective item can be replacement for free or refund. If any question, please feel free to contact or QA us, BZ 3D is committed to providing you with the best service!