A roller for noise insulation. If you are going to make noise and vibration insulation in your car, you cannot do without a roller because between the vibration insulation and the metal should not be left a drop of air, otherwise all the efforts are for naught. The seller offers a choice of two roller widths of 1.4 and 1.9 inches. The rolling surface is made of hard rubber, so the roller is very durable and will not scratch the paint on the body.