Specification: Item Type: Speaker Foam SurroundMaterial: Rubber Colour: Black Inner Diameter: Approx. 234mm / 9.2inSecondary Diameter: Approx. 242mm / 9.5inSecondary Outer Diameter: Approx. 280mm / 11.0inOuter Diameter: Approx. 295mm / 11.6in Package list: 1 x Speaker Foam Note: 1. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. 2. The measurement allowed error is +/- 1-3cm. With Excellent Fexibility Performance: Loudspeaker surrounds is made of high-quality rubber material, with excellent flexibility, aging resistance, durable, long service time, can adapt to our high strength use. Bass Effect Become More Outstanding: Rubber trim speaker installation, can make the speaker bass effect become more outstanding, to prevent vibration influence audio or music sound playback. Effectively Protect: 12inch speaker rubber surround edge effectively protects the speaker from dust and makes it cleaner, which makes our speaker sound better and last longer. Great Replacement: Great replacement for your old 12 inch rubber rim, Swan horn, Wyway speaker, etc. Speaker rubber surround is made of high quality rubber, manufactured in strict accordance with production standards, quality is very guaranteed. Warmly Note: If you want your speaker or speaker equipment to last longer, our speaker rubber is highly recommended, please clean up the glue residue before installing the new rubber edge.