6.5" Sound Insulation Cotton Pads Car Universal Speaker Insulation Rings Foam Features: exceptional sound with this 6.5 inch car speaker insulation cotton. Crafted from durable foam material, it effectively seals speakers and reduces vibrations. for car enthusiasts and vehicle modification lovers. Transform car interior and enjoy music during long drives or gatherings. Take your music to the next level with this soundproofing solution. Specifications: Sponge Thickness:15mm/0.59'' Diameter:6.5Inch Package Includes: 1x Soundproof Pad 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.