As a leader in a Refrigeration Lock-ring tool that uses the new 600a refrigerant requirements, we developed and patented a new compact and easy to use Lock-ring tool. Because this new tool is our own design and manufactured specifically for us, we achieved a lower cost that passed to new buyers without losing the quality and reliability of the Tool. All our tools include a one-year warranty. We are pleased to share our reliable and low cost tool with all our customers