Visbella DIY Windshield Repair Kits Restored Glass Tool For Chip & Crack Fix Windscreen Good for multiple repairs Easy to use for all types of lamented windshields Minimizes the appearance of cracks and stops them from spreading For best results, repairs should be made as soon as possible after the damage occurs and before the break is contaminated by dirt or water Works best on round damage not more than one inch in damage not more than one inch in diameter and cracks not longer than 12 inche