Second Skin Damplifier Pro Pack Butyl Rubber Sound Deadener with Wooden Roller - 18 Sheets, 30 Sq Ft. (12" X 20" X 2 mm) - Made in The USA Excellent for use on automobile door skins, floors, ceilings, trunks, and in between rattling panels. Comes with heavy duty wooden hand roller. Made from US hardwoods and thick steel to prevent the roller from popping out under pressure. Push products tight against smooth surfaces and press material into tight corners/crevices. Damplifier Pro is a constrained layer damper that converts vibration energy into low level heat. This conversion of energy makes it 300% more efficient than tar boards and asphalt mats while weighing half as much. Directions: Cut, peel & stick to any prepared fiberglass, aluminum or sheet metal. Push and press with hand roller. Thermal range of -75F(-60C) to 450F(232C) preventing melting or falling off. Proudly Made in the USA.