Not sure if I'm not using the tool correctly or if my locks are just really bad. However, it is a pretty strong tool.

Nissan is notorious for have sagging doors.After dealing with slamming the car doors for years, I decided to check this out.I originally was looking at the Steck Manufacturing tool, but the primary vendor looked really suspect when you checked them out; there are cheap China copies that are around half the price that the original Steck tool is asking for.Yes, this Lisle tool is bulky (something the Steck tool likes to point out), but it's one-piece and can handle the abuse of being used over and over again.You don't need to crank on it - just a little at a time until the door closes nicely.The double ended stud came in handle, as my too came with the thicker stud installed.A 16mm semi-deep socket and it came right out - flipped it over (to the thinner stud) and I was ready to go.The stud is the part that goes into the door latch while the fork goes onto the door jamb catch.Literally a minute or two on each door (I needed to do 2 doors), and they were shutting without much fuss.It took me more time to figure out how to undo the door latch catch afterwards versus adjusting the door itself!

Works well.