At times, no matter how many tools one has in their 'box'...there is always tthat 'special' tool that is required. This is one of those. Recently while visiting a local Toyota dealership and working with some of their techs, I encountered this tool. Very soon afterwards while working on a late model Toyota Prius AC, a need for this tool was encountered. A quick order and thanks to Amazon's quick service we were able to complete our repair. Since then the tool has paid for itself many times over by reducing the time necessary to complete various repairs.