The KLEDGE-LOK tool is designed to complete most line repairs right on the vehicle by reaching into, behind, and underneath the difficult places that lines are found. Use with the supplied T-bar, a basic open-end wrench, a square-drive ratchet, or an air or battery powered impact wrench. The KLEDGE-LOK System has been successfully tested to 2000 PSI for high-pressure applications such as transmission cooler lines, steel fuel lines, and oil cooler lines. Repairs can also be made in automotive and heavy duty truck applications.