DO NOT BUY. I bought this for my truck since everyone in Atlanta loves to steal truck wheels. I used my regular four-sided wrench to unscrew a regular nut. Put a new one on with this "key" or nozzle. Decided to try a "protective" nut with my 4 way mount and no kidding it worked right away. As immediately. This is not a security feature, buy another one even if it looks strange.