3D Printer Belt Tensioner

2020 X-axis / 2040 Y-axis / 4020 Y-axis / 4040 Y-axis synchronous belt tensioners with high quality aluminum alloy material. 2020 X-axis synchronous belt tensioner 2020 aluminum profile X-axis synchronous belt tensioner, widely used for Creality Ender 3, Ender 3S, Ender 3 Pro, Ender 3 V2, CR-10, CR-10S, CR-10S Pro V2 and other 3D printers with 2020 aluminum profile. 2040 Y-axis synchronous belt tensioner Compatible with CR-10/CR-10S, and other 3d printers with 2040 aluminum profile. Please Note: not fit for Ender 3 Pro.  4020 Y-axis synchronous belt tensioner Widely used for Ender 3 and other 3D printer. 4040 Y-axis synchronous belt tensioner Widely used for Ender 3S/Ender 3 Pro/Ender 3 V2 and other 3D printer