It's a rubber roller. It rolls and it's rubber.

Gets bubbles out good.

Great for bubble wrap.

Has lots of features.

Great roller, doesn't tear the matting and perfect for curved surfaces.

Looked around everywhere for comparable tool. Nothing quite as friable as the dynamat rubber. Works great. Only gave 3 stars for value because you know it only costs $2-3 to make. But, like I said, could not find one to work quite as well.

I recommend buying this tool when you purchase your sound deading, made my installation a breeze.

You will want this for installing Dynamat, there is a foil type coating that will cut your hands. Also helps flatten the dynamat.

I used this in my 2008 Chevrolet Impala to eliminate the road noise. I applied it to all four doors and it worked great. also made my factory replacement Rockford speakers I got from Sonic Electronix sound much better.

Worked a 100% better than the plastic roller I was using and broke putting in dynamat. This roller is a must have if your putting down lot's of sound deadner.

Rubber tool is much easier to use than the wood roller in large areas, but I found the wood roller to be helpful in tight spaces as well. If you are only going to get one, get the rubber. Very hard to properly install without one

This tool may look plain but it is, however this tool mixed with a heat gun or your dynamat laying in the sun on a hot day makes ease and longivity of your installation. This helps to fill all the cracks and tight areas. Recommended for one time application or the car audio installer.

this tool really does help, but you can also just use the butt end of a screwdriver to smooth out the dynamat original or extreme