Anet et4x X axes tensioner

This tensioner is a one way upgrade.  To install it, you'll net to remove the idler pulley and cut off the steel stud it was attached to.  I did this using a hacksaw and a file.  The knob is the same as my other tensioners.  Use the knob from https://www.printables.com/model/504069-anet-et4x-y-tensioner