2020 X axis V-Slot profile 2040 Y axis synchronous belt Stretch Straighten tensioner For Ender 3 CR-10 10S 3d printer 2020 X axis V-Slot profile 2040 Y axis synchronous belt Stretch Straighten tensioner For Ender 3 CR-10 10S 3d printer. Sale price : $8.13 Category : Computer & Office