BDZMC car speaker foam ring has a simple and fashionable appearance, and the internal structure has been carefully designed, which is seamlessly integrated with the audio system to effectively avoid sound diffusion. It is a practical and aesthetically pleasing automotive accessory. Specification: Brand: BDZMC Name: Car Speaker Foam Rings Color: Black Material: Foamed Cotton Size: Inner diameter: 5.63 inch Outer diameter: 7.64 inch Applicable: Most vehicles Features: -This speaker ring minimizes sound diffusion, enhances overall audio performance, and provides clear, superior speaker sound. -This 6.5 inches speaker foam ring has a slow rebound property that gradually recovers its original shape even when compressed. -The speaker foam rings have good adhesion and can be firmly fixed after installation to prevent it from falling off.