Review on Enhance Your Lighting with Westinghouse 7016100 Replacement Light Knobs by Mario Bullard

Too bad they didn't bother to give them some durability. Like metal inside the handle. Plastic just shouldn't be used for certain things, especially those that are under torque. One popped right off and I had to use super glue, hopefully it will hold. If your headlights are outdated and difficult to turn, don't buy them! I even lubricated the threaded on/off mechanism and used an extension.