Works as advertised but I still used a deep 3/4 inch socket, the back of a screwdriver, and a heat gun to get the job done. This thing is really useful and helps but it's worthless if you do not heat up the sound dampening sheets with a heat gun. It helps a lot with covering all the extrusions of a door, floor, or roof in any vehicle. All in all this roller is pricey but a useful tool to do this job right.

This tool was very helpful in installing the Dynamat in my car. It is a little pricey for just a rubber roller, but it definitely helped get the job done. I was able to use my fingers for the rest of the spots. Helpful Tool, would recommend to anyone doing a lot of Dynamatting.

Really helpful tool for Dynomat/Dynamat. It is much better than the wood roller. Just a little pricey for a rubber roller.

It got the job done, but as stated above, I wish there were an even better one than this. Doing a whole trunk with this will definitely give you a few blisters; I even cut my fingers a couple of times on the metal while trying to apply pressure.