The dynamat brand has two rollers, one a wood one (cheaper version) and a "pro" roller, which is like a hard rubber roller with a wood handle. They are just basic press rollers to compress the dynamat once it is down. It is easy to apply, just clean the metal well with alcohol and a rag, peel the backing paper, and stick. You will need to learn how to apply it into the recessed portions of panel so you are not leaving air pockets where the area has reinforcing channels. Also this crap does not stretch, so you will need to make relief cuts in some folding over portions so that lay flat.
