This tool knocked out 3 cylinders within 45 minutes compared to another tool I used that took over an hour to do 1 cylinder.
Removal is a piece of cake, installation isn't bad but once you find the right pressure to apply & hit it with then you'll fly through it.
As a shade-tree mechanic I was worried at first that I would be spending the big bucks on a tool for snap-on... NO NEED! I was able to replace my valves by hand, no problem! The magnetic tip makes catching the retainers a breeze, and it was easy to reinstall as well! I have already recommended this tool to my friends.