Optimus/Realistic 10" Speaker Foam Surround Repair Kit - 10 Inch Optimus 2539, 2540, 2589, 40-1101, 40-1102, 40-1331B, 40-2029, 40-2042, 40-2047, 40-2043, 40-4033, 40-4037, Nova 18, Nova 7B, Nova B, Optimus 300, Optimus 30, Optimus 45, Optimus 75, Optimus 650, Optimus 660, Optimus T-120, T120, S0153, T-30, T30, T-110, T110, T-200, T200, T-300, T300, Radio Shack and others that match the measurements Same surrounds that professional reconers use; not cheap Chinese imitations! Complete 2 speaker foam surround installation kit - 10 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.