EV Electro-voice 8" Speaker Foam Surround Repair Kit - 8 Inch This is genuine "filleted" foam with a direct-attach inner lip, not the generic knock-off that others may sell. Fits Electro Voice Sentry 100a, Cristal, Interface 1, Interface 2, Interface 3, Interface A, Interface B, MS-802, MS802, MS-803, MS803, Sentry 1, Sentry 100, Series 1 and others that match the measurements. jmkm,,, Same surrounds that professional reconers use; not cheap Chinese imitations! Complete 2 speaker foam surround installation kit - 8 inch Easy to follow step-by-step installation instructions and videos FREE phone support at 1-800-397-9575 and FREE shipping within the U.S.