These nuts are fully factory in appearance. All problems are related to the factory design. It's a steel nut with an aluminum cap. This coating is easily damaged and therefore needs to be replaced from time to time. The wrench size is 22mm, which is 0.009 inches smaller than the 7/8 used in traditional four-way wrenches. 6 point 22 deals the least damage and you can switch to 7/8 after accumulating some damage.