Bought the bihui leveling clips, and although it's a great concept and easier to use than my standard screw down metal clips, they are not strong enough and constantly broke if screw down a bit too hard although didn't take a lot of pressure, I think the problem is with large format 60x60 tiles onto a solid bed and back buttered they have a massive amount of suction, so not much is going to pull them level without a lot of strength, so be wary that they will need a helping hand with your scraper underneath to lift the tile slightly, (that's if the floor is bad to enough to need that adjustment), maybe if bihui made the whole threaded piece out of metal that would work.