Foam Speaker Enhancer Kit use high-quality foam material make sure the product is soft and elastic. Make it weather-resistant and stable, not affected by high or low temperature, and stable sound insulation. DETAILS: Material: memory foam Color: Black Size: outsize diameter: 7.56” inner diameter: 5.6” height: 0.98” ?FEATURES? 1. Great for 6”-7” car door speaker 2. Made from memory foam, high rebound, waterproof 3. Durable, and crush resistant 4. Enhances sound quality and absorbs unwanted echoes 5. Self-adhesive design, easy to install, and not easy to drop 6. If you have any questions, please feel free to contact us, we will try our best to help you.

?[Self Adhesive]: Speaker fast rings with strong stickiness, no easy drop, easy to install. ?[Function]: Specially designed foam for car door speakers, great for preventing sound diffusion, absorbing door echoes, enhancing speaker sound, and strengthening audio effects. ?[Product Material] : Foam Speaker Enhancer Kit use high-quality foam material make sure the product is soft and elastic. Make it weather-resistant and stable, not affected by high or low temperature, and stable sound insulation. ?[Product Function]: The Foam Speaker Enhancer Kit prevent the sound quality from spreading, Absorbs the echo from the car door, Enhances the sound effect of the horn, and strengthens the sound effect. ?[Product Size] : Car speaker foam ring outside diameter 7.56inch/192mm, inner diameter: 5.6inch/142mm, height: 0.98inch/25mm, great for 6" 6.5" 6.75" 7" car door speaker.