Upgraded 3D Printer Synchronous. Adjustable X/Y Synchronous Belt Stretch Straighten Tensioner for Ender Series. CR Series
Material: aluminum alloy; Surface Treatment: anodizing.
Widely Used: for Creality CR/Ender series.
Install: Already assembled. you don’t need to assemble it by yourself.
Function: you can adjust the belt freedom. better than the original.