Pioneer 3" Speaker Foam Surround Repair Kit - 3 Inch Fits Pioneer 77-701F, 77701, 77-702F, 77-710F, 77710, 77-40, 7740, 77-90F, 7790, CS-77A, CS77A, CS-88A, CS88A, CS-99, CS99, CS-A500, CSA500 and others that match the measurements Same surrounds that professional reconers use; not cheap Chinese imitations! Complete 2 speaker foam surround installation kit - 3 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.