Features: -Water resistance: high density, moisture proof, good water resistance. -Corrosion resistance: resistant to organic solvents, acids, alkalis, etc. -Temperature resistance: The flame retardant grade is V0 grade, which is resistant to cold and exposure. -Sound insulation: high-density closed hole, good sound insulation effect. -Anti-vibration: high tensile strength, good toughness, and good shock / buffer resistance. -Easy to hot press, cut, coat and laminate, easy to shape. Specification: Product Name: Soundproofing Foam Tiles; Material: Sponge; Color: Black; Size: 20x20cm; 1pcs Thickness: 0.3cm / 1cm / 2cm / 3cm; Quantity: 10pcs. Fitment: For KTV / Audio / Room / Car,Etc. Package Includes: 10x Soundproofing Foam Tiles. Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instructions included in this kit.If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.