?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. See more

?What you Get?: There are 4-pack car door speaker fast rings in the packages, after installation, you can enjoy 360-degree surround mid-bass in your car. ?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. ?High Rebound Sponge?: Car door speaker foam made of Polyurethane polymers, high rebound, durable, crush resistant, waterproof. ?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.