RUBBER FLEXIBLEUniversal rim foam repair woofer is made of high quality rubber, it is flexible, anti-aging and durable. This rubber ring is very soft and resistant to oxidation, will not rust, the softness can make it better fixed. PROTECT SPEAKERUniversal rim foam repair woofer is to protect the speaker from dust and make it cleaner. With universal rim foam repair woofer, your speakers will not be damaged by dust and maintain good sound quality. SOUND QUALITYEnhance the bass and make your speakers sound great. The sound quality of the speaker with rubber ring will be more pure, universal rim foam repair woofer will provide you with the most beautiful music. EASY TO USERemove the old rubber edge and clean the residual glue. Replace it with new ones(No glue). Inner diameter:234mm/9.2in, Secondary diameter: 242mm/9.5inch, Secondary outer diameter: 280mm/11.0in, Outer diameter: 295mm/11.6in. SERVICE GUARANTEEOur products are made of professional technology and quality assurance. If you have any questions, please contact us in time, we will solve the problem for you within 24 hours. Product Description 12inch Universal Rim Foam Repair Woofer Bass Loudspeaker Surrounds Circle Foam Speaker foam surround is made of high quality rubber, it is flexible, anti-aging and durable. The sound quality of the speaker with rubber ring will be more pure, universal rim foam repair woofer will provide you with the most beautiful music. Package list: 1 x Speaker Foam