Well these are the next best thing to having a kangaroo standing by your vehicle with a baseball bat. The simple to install security nuts will help protect your investment against ‘light’ fingered thieves. Each kit consists of two half dome coded nuts and one keyed socket requiring a 20 mm, 13/16" spanner . These nuts will fit all LIGHTFORCE driving lights and other lights using a 10 mm bolt (M10 x 1.5).