Reproduction die-cut stripe kit comes premasked to allow for ease of installation. Instructions are included, however we highly recommend that these kits be professionally installed. NOTE: Most cars with black stripes used a less-glossy stripe called "flat black". Some cars, however, used the glossy "black" stripe. Be sure to check your car carefully before ordering. Also, if a 2-part polyurethane or clear-coat type finish is applied to the car, you must wait a minimum of 5 days before applying any stripe kits. Polyurethane paints and clear coats experience a certain amount of "outgassing" during the curing process which will cause the decal film to bubble if applied too soon.