Vibration reduction: the sponge plug helps to reduce vibrations, wind noise, enhancing the listening experience, acoustic sponge plug, bass reflex plug; Universal fit: compatible with various speaker port tubes, bass ducts, and speaker cabinet port tubes, bass control plug, speaker dampening plug; Improved bass reflex: the sponge plug provides better bass reflex for speakers, improving the bass response of various speaker, multi purpose sponge bung, speaker port insert; Versatile compatibility: ideal for home speakers, car speakers, portable speakers, and upgraded speaker systems, noise reduction sponge, bass tube plug; Noise reduction: the sponge plug minimizes wind noise, providing a better audio experience, port sealing plug, tube bass plug

What's in the box
2 x Speaker Replacement Parts