I had first used precut tint to do my taillights on my BMW which was horrible with the curves of the lights. Not enough material to grab onto to stretch it. Wound up buying a sheet of tint and that worked good. I also purchased the prep, tack and gloss sprays. Those were definitely worth the money. Each product did the job. The black out tint is exactly how it sounds. Looks awesome! Think the tint was a bit pricy but it matches the rest of the tint on the car.