Review on MASTERCOOL 58560 Black Remover Installer by Tom Duncan

Very well made - however the part of the tool that interacts with the valve core may not hold/lift the valve you are working on. I bought this kit to replace the M10 valve (high side) on my 2011 Ford F250 AC system. Everything works great EXCEPT the tool doesn't lift the valve. Which makes it useless. Other Mastercool kits and valve sizes may work, but I can tell you this kit WILL NOT LIFT the M10 valve. Although it is the right kit for the valve. It's hard to rate the performance and value of a product that doesn't work. I think I can make it work - either by adding sticky stuff (like watchmaker radicos) or by adding stuff. to make a frictional closure. HOWEVER - I didn't have to figure out how to get the product to work (in my opinion).