Recently got the red case one, I think it worked fine on a cam seal Toyota 3.3, used it one the crank seal as well using the longer set of hooks, which the metal could be a little thicker. Then I also had the screw driver handle type and that worked good too. With either the strategy I found, just budge the seal loose at several spots around the perimeter and not try to take it out in 1 pull. For the cam seal install part I used the same as above and in this video at the 10 minute mark, and for the crank some PVC pipe that was similar diameter here too.