I bought inch hexagons in all tools and replaced the broken plastic with metal, drilling the plastic part of the wheel with a drill with a smaller diameter, and then pressing the cut-off part from the hexagon key into the wheel with a vise. Repair justified in my opinion. The mouse is comfortable. It's a pity that the engineers from Asus did not think of this before. And all that was necessary was to replace the plastic Flimsy part with metal!