db Tool makes aids in the installation of several of your db Series sound dampeners making it easier than ever! Who uses rollers? Painters and bakers, we have no clue why you would use one for sound dampeners. It has been designed with a unique shapes, to ensure a good bond between the db Series dampeners and the vibrating surface without any sharp edges so it doesn’t damage them during installation. Unlike rollers which only well on flat surfaces, this helps you work the sound dampener into the irregular surface, the flat surfaces are easy, you need something to help you for the nooks and crannies of your body panels.