Product Specifications: Length 100mm, Width 100mm, Thickness 2mm, Set of 120 sheets Noise Reduction: This damping sheet is made of aluminum foil and butyl rubber, creating a quieter and more comfortable driving environment. This deadening material has excellent high-temperature resistance and can effectively suppress the diffusion of heat energy and sound. It meets the needs of car enthusiasts and replaces heavy damping products traditionally installed on the chassis floor and inside the car. New Design: The grid pattern is denser than regular patterns, offering superior sound insulation. High-Quality Butyl Rubber: Black butyl rubber is more durable than white, has higher viscosity, and is resistant to aging.