This straight forward tool will let you remove the tach seal in minutes time and time again. The seal removal tool is so easy to use, it’s as easy as counting to five! One: remove the vacuum pump to give the tool plenty of room to work. Two: thread the alignment sleeve onto the housing as well as the puller. A 3/4” wrench is helpful here. Three: adjust the alignment sleeve so it can rotate freely. Four: install the slide hammer and bolt. Five: Firmly impact the bolt head with the slide to bring the seal out. That’s it! 1 lbs (0.5Kg) shipping weight.