Features 1、Made of high quality rubber, it is flexible, anti-aging and durable. 2、Protect the speaker from dust and make it cleaner. 3、Enhance the bass and make your speakers sound great. 4、Can replace the old 12‑inch rubber side, can replace for Swans horn. 5、Remove the old rubber edge and clean the residual glue. Replace it with new ones. (No glue). Specification The body of this stylus is made of rubber material and is durable for everyday use. Designed for high performance and natural writing experience. A pen for professionals to write, draw or mark documents digitally. Features: Made of high quality rubber, it is flexible, anti-aging and durable. Protect the speaker from dust and make it cleaner. Enhance the bass and make your speakers sound great. Can replace the old 12-inch rubber side, can replace for Swans horn. Remove the old rubber edge and clean the residual glue. Replace it with new ones. (No glue). Specification: Item Type: Speaker Foam Surround Material: Rubber Colour: Black Inner Diameter: Approx. 234mm / 9.2in Secondary Diameter: Approx. 242mm / 9.5in Secondary Outer Diameter: Approx. 280mm / 11.0in Outer 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. Package List