Chrome 12V LED Slotted License Plate Bolts. Here is a your chance to add some more class to your cruiser or show car! These will really clean up the license plate area. The shaft is 1/4" OD and they are 1 1/2" long. The head is 1/2" wide by 5/8" long. They are metal. Did you notice the 3/16" allen head? The package says 12 volt but they were just as bright with a 6 volt battery? The camera didn't do a very good job on the lighted LED. Sorry. These sure would be nice for accent lighting. Under dash? Under hood? Trunk? Behind the grille? The listing is for a pair as shown.