I bought a set of the black aluminum ones of ebay. Never used an impact on them, but they distorted and stripped pretty badly after a little while. Granted, I did have the wheels on and off probably 10 times messing with different brake pads, but it still surprised me how cheap they were. I contacted the seller about getting a few replacements, but he hardly spoke english and would only sell me an entire set again. I hated the cheap, stock lug nuts because the "caps" would fall off and they looked like ****. I went to a tire store and bought all new ones that were a solid, one piece design for like $35 and haven't had any issues at all.