Features Well Made: Anodized surface treatment, straighten tensioner is wear‑resistant and durable. Adjust Belt: Useful upgrade parts for 3D printers, straighten tensioner can adjust belt tension. Convenient to Operate: Precise designs, straighten tensioner is easy to operate, simple to install and use. Scope of Application: Straighten tensioner is perfectly fit for Creality CR‑10 CR‑10S Ender‑3 3D Printer. Fine Workmanship: Conform to strict quality control standards, straighten tensioner is dependable to use. Specification: Item Type: X-Axis Belt Straighten Tensioner Material: Aluminum Alloy Color: As picture shown Surface Treatment: Anodic Oxidation Fitment: Fit for Creality CR-10 CR-10S Ender-3 3D Printer  Package List: 1 x X-Axis Belt Straighten Tensioner 1 Pack of Screw Accessories Package List 1 x X-Axis Belt Straighten Tensioner 1 Pack of Screw Accessories