This system gives you a standard flashlight and a black fluorescent light for key impressioning. To impression, take the fluorescent pen provided with the kit, rub it down the uncut edge of a new key blank and let dry for a few seconds. Then insert the key into the cylinder and turn back and forth. Remove the key blank and use the black light of your UV System to find the areas to file.
The pins will rub the highlighter off and it won't glow. This kit works well in daylight, but it is a true timesaver at night.
The system contains the light and the fluorescent pen.