I've done the heads on a Suby 2.5l SOHC without this, and, while it's possible to use a couple socket extensions and a pry bar, getting the snout bolt to torque puts a lot of rotational force on two holes of the damper material, and it's always precarious. I never knew if or when one of the extensions would fly out with more than 100 lbs of force on the wrench. This takes all that concern away, because the tool fits into all four holes and gives you room to get your socket through it. Getting the crank dampener bolt out is also easier. I was able to lock the end of the tool against the driver-side fender well below the battery location and pop off the bolt without worrying something would go flying. And I didn't need to use an impact on the crank end. When I saw this on a Youtube video of a guy doing heads, it was a no-brainer purchase. It's cheap insurance to do the job right.
Reviewed by: (Verified Buyer) Ken Strandberg from Nevada.