Complete kit contains everything required for making professional-quality permanent repairs in just minutes. State-of-the-art components and easy-to-follow instructions with photographs. Repairs all types of plastic tanks. The repair resin is designed to harden within 8 to 10 minutes and cures in 30 minutes. Repairs can be made ideally at temperatures from 50 degree Fahrenheit to 75 degree Fahrenheit (10 degree Celsius to 24 degree Celsius). Repairs cracks up to 4 inch in length and holes up to 3/8 inch in diameter.