Good Quality --- This Speaker surround foam edge is made of high quality rubber, pliable, anti-aging and durable Enhance the Bass & Make Your Speaker Sounds Great --- Exquisite craft, wear-resistant, help to get nice audio effect for low pitch sound and also help protect the speaker from dust and make it cleaner Compatibility --- Good replacement for your old speakers etc. Note: please remove the old rubber and clean the residual glue before install the new rubber edge Easy to Use --- Perfect for any average -yourselfer, FREE technical support, easy to install This perforated rubber edge is for speakers repair or DIY. Specification: Material: Rubber Package Includes: 16pcs Speaker Rubber Foam(4pcs/size) Note: All dimensions are measured by hand, there may be small deviations. Color may vary slightly due to the color setting of each individual monitor. Thanks for your understanding. Please enjoy your happy shopping time!