Professional A/C Tubing Repair System. Fast, economical tube and hose repair. Repair pinhole leaks, cracks, kinks, and rub throughs with KLEDGE-LOK in air conditioning, coolant, transmission, oil, or fuel lines. Not for use in brake or clutch systems. - Quick - Easy - Low Cost - No Welding or Soldering - Airtight and Pressure Resistant - One Tool with Interchangeable Jaws - Large Selection of Special Connectors and Unions. 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. 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.