Speaker Surround Re-Foam Repair Kit For 6-1/2" Speaker
Amazon.com: Standard 10" Angle-Attach Speaker Foam Surround Repair Kit - 2 Speaker Kit - Fits Several Dozen Different Commonly Used 10" Speakers of Different Brands and Models Whose Foams Match The Measurements :
HOW TO: DIY speaker refoam using a Parts Express repair kit - YouTube
Amazon.com: Standard 12" Speaker Foam Surround Edge Repair Kit - 2 Speaker Kit - Fits 12" Speakers with a 3/4" Roll and The Measurements Listed : Electronics
6" x 9" Angled Speaker Repair Kit For Replacing Foam Surrounds
Parts Express Speaker Surround Re-Foam Repair Kit For 12" Speaker