🎉 Elevate Your Drive with Sound That Moves You! Designed to accommodate a variety of speaker sizes for ultimate versatility. Say goodbye to unwanted echoes and hello to crisp, clear sound. Includes 4 foam rings for a full upgrade to your sound system. Strong stickiness ensures your rings stay in place, no matter the ride. Elevate your car audio experience with enhanced bass and clarity. Sound Quality Boost 6.5" Diameter Easy Installation The VOFONO 4PCS 6.5 inch Car Door Speaker Foam Fast Rings are designed to enhance your car's audio system by preventing sound diffusion and absorbing echoes. With a universal fit for various speaker sizes and easy installation thanks to durable adhesive, these foam rings are the perfect upgrade for any car audio enthusiast.