JL Audio Speaker Single Foam Edge Repair Kit, 12", 12W0, 12W3, 12W4, 12W6, FSK-12JL-1 (Single) Easy to follow illustrated instructions. Installation average time is 30 minutes per speaker. Perfect for any average do-it-yourselfer. Our YouTube videos make installation easy! FREE technical support. FREE shipping to any USA address. Join thousands of customers that have installed our New-Edge-It  speaker foam repair kits successfully! We are proud to be a #1 seller on Amazon. We are a full service speaker repair center, in business for over 20 years!