The CRL 1 oz. Bottle Windshield Repair Resin in these kits has exceptional cure speed and bonding strength to fill gaps in damaged windshields. The system uses either natural or artificial ultraviolet light to cure the resin. The complete kit has the resin and tools for up to 30 repairs. Re-supply kits come in lots of 10 or 25 repairs. This special resin will work in all UV type Windshield Repair Systems. One ounce of resin repairs approximately 70 to 100 breaks, and comes packed in a sealed bottle and pouch to protect it until use.