So, I know there are mixed reviews. This tool is no joke. It is a piece of cake for removing the keepers but be careful on install. If head is still on the block, which is why I bought it, then prepare for a test of endurance, patience, looking for keepers that don't set properly on the first try and it requires some meticulously applied strength on the valve springs (as straight as possible). SECURE THE ENGINE FROM TURNING OVER IF YOU ARE USING COMPRESSION IN THE CYLINDER, take your time, maybe have a helper I did not, use some sort of thin easily manipulated cloth to put around each valve you are working with, I didn't, this could prevent incorrectly seated keepers frome falling into your head during install(happened to me luckily they were found without pulling head). I was able to complete the job and have the engine runing again in 12 hours. Try to find some youtube videos to watch. SECURE ROTATING ASSEMBLY AND GO EASY ON INSTALL. It gets the job done!

Worked amazing and super easy to use. Made my build go by fast. Definitely recommend. I used this on my b16 build.

Better to buy this version with both tools than either size individually... You never know when you'll have clearance issues. Fortunately, this worked well on a Mazda Miata to replace the valve seals.

I like this tool very much use it on Subaru valves.

Thank you for such a quality product!

Worked better than expected, well worth the money

Awesome tool for doing valve stem seals! Wish I would have bought one years ago.

I have only used the remover from the set so far but it worked great. Was able to help me not lose any of the keepers thanks to the magnetic tip.

So quick and simple. Made rebuilding my northstar heads(32v) a breeze.

did the job

Worked great

excellent