ITEM NAME:3inch 4inch 6inch Perforated Rubber Speaker Foam Edge Surround Rings Description: 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 do-it-yourselfer, FREE technical support, easy to install This perforated rubber edge is for speakers repair or DIY. Specification: Material: Rubber Size:75*75*3mm Size:100*100*3mm Size:155x155x3MM Package Includes: 3 Pieces Speaker Rubber Foam SKU: DMO0017121019467503.This perforated rubber edge is for speakers repair or DIY. 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.