Cooper Kleen Windscreen Repair Kit is a handy tool designed to make repairing small chips and cracks in your windscreen a breeze in just 30 to 50 minutes. This kit will minimise the appearance of chips and cracks in your windscreen and prevent them from spreading any further. It works by removing air from the break and then fills it with a durable resin, making the area even stronger than before. To achieve the best results, repairs should be done as soon as the damage has occurred and before the break is contaminated by dirt or water.