Features: Efficient sound insulation: This tool is designed for installing car sound insulation cotton, which can effectively isolate noise and vibrations, providing a clearer sound quality experience. Convenient operation: Adopting a roller push wheel designs, the operation is simple and convenient, and can quickly complete the installation work of soundproof cotton. Multi functional use: In addition to installing car sound insulation cotton, this tool is also suitable for installing wallpaper and other work that requires rolling. Durable material: Made of silicone and plastic materials, it has durability and can be used for a long time without damage. Innovative designs: Unique roller and push wheel designs makes operation smooth and more efficient. Compact and portable: The tool is compact in size, easy to carry and store, and convenient for users to use in different scenarios. Specifications: Material:Silicone,Plastic Type:Small,Large Size:Approx.175mm/6.89''x50mm/1.97''(Large),175mm/6.89''x30mm/1.18''(Small) Package Includes: 1x Car Sound Deadener note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.