VOFONO Speaker Fast Rings 6.5 inch [4 PCS], Car Speaker Foam Baffles Enhancer System Sponge Bass Blocker Kit for 6" and 6.5" Speaker

Product function - enhance the sound effect of the speaker, eliminate noise, and make the sound more concentrated. Take the time to install some sound deadening material on the inside and outside door panels and on the back of the door cards - this really makes a profound improvement in the sound quality of any vehicle's door speakers. HIGH QUALITY - Made of high-density and high-strength EVA, completely waterproof and no mold! Effectively improves audio projection inside the door and creates a good seal to prevent sound from being lost inside the door. Durable Adhesive - The door foam speaker has double-sided adhesive, this kind of adhesive is strong, not easy to fall off from the speaker, it can be used for a long time, don't worry. Durable Compression - High density and high elasticity, the car horn sponge has long-lasting anti-extrusion, not easy to deform after long-term use. This set includes 4 packs of speaker foam rings to improve the sound quality of the doors of 4 cars. After installation, you can enjoy 360-degree surround mid-bass in the car.