I just used painters tape around the actual outside of the lug.. so it didnt get any spray on it. Then I wadded up some paper towel to cover a majority of the threads on the inside so it didnt make them hard to put on. Leave about the depth of your pinky fingernail showing.. this is the part that will rust. Just spray clear in the open side, and let them all dry. If you dont do this, it will start to rust after only a few car washes
