Worked perfectly on a 1993 Mazda Miata. You can use this with the head on or off the engine. On the Miata, I used it with the head off, and didn't even need to use a hammer, just throw your body weight over the tool and press down and ease it back up PRESTO. Use with a balled up rag under that set of valves you are working on. Did this for both removing and installing the valve keepers. I used the small handle out of the kit. HIGHLY RECOMMEND to clean tools before using, some small aluminum shavings present could contaminant head/valve train. HIGHLY RECOMMEND to wrap the tool in electrical tape (or something similar) prior to using the tool to keep from scratching/marring the surface where your valve lifters sit in the head.
Rating: [5 of 5 Stars!]