Anet A6 Y belt aligner

Important: There are two ways to assemble the H-carriage, take a look at this picture:
https://3dprint.wiki/reprap/anet/a8/bed-carriage
(while it's for Anet A8 this picture just shows the idea).
Moving the central plate beneath cuts 6 mm of height. That's why this thing has two designs: 17 mm and 11 mm of height. Choose the one you need !

As you see from the picture it moves the top part of the belt lower to make it parallel with the bottom part.
Also, you'll need the longer screws.

Af