Creality CR-10S Pro V2 Y-axis 9mm belt tensioner mod

Made this because I can't find 9mm y axis mod on the internet and no one post about tensioner for this specific printer. 

- just need to replace the stock pulley to 9mm ones, buy a new belt clip, m5 nut, 2 M5x16 
- all the bolts are 5mm 
- better to use gates belt instead of the generic ones 

I printed it in ABS but might work with PLA
use high infill percentage