I have used this only once to change my valve stem seals and it worked perfectly. Took me a little over an hour to do all 16 valves on my DSM. I paid $160 shipped for this because i needed it ASAP i'm looking to get $100 for it.

Description from Snap-On website "Removes/installs the valve spring without removal of the cylinder head from the engine. Domestic and import servicing of single and double overhead cam engines, including Audi, Chrysler, Infiniti, Honda, Hyundai, Lexus, Mazda, Mitsubishi, Nissan, Porsche, Saturn, Toyota, Volvo, and Volkswagen."