Key Features: The E-Z-Click injection system is composed of a specially designed fitting and ports that take the mess out of your repair project while allowing you to work faster. The E-Z-Click injection fitting installs onto the end of the Optimix® mixing nozzle and clicks onto the E-Z-Click ports during injection. The positive connection eliminates messy leakage, minimizing waste and clean-up. E-Z-Click Flush-Mount Injection Port Kit (20-Qty) (Pack of 5).