Infinity 4" Speaker Foam Surround Repair Kit - 4 Inch Fits Infinity 902-2046, 902-5051, 902-7345, 2000A, 87060CU-01FW 5.8, Composition Overture 1 BLK, Composition Quadrapole Surrounds (PFR), ERS-420, ERS420, Kappa CS-1A, Kappa, Kappa 32, (Auto), M100-3, Prelude P-FR (Composition), QLS, Quantum Line Source, RS-400, RS400, RS-7B, RS7B, SL Micro Satellites, SM-112, SM112, SM-115, SM115, Sterling TS System and others that match the measurements Same surrounds that professional reconers use; not cheap Chinese imitations! Complete 2 speaker foam surround installation kit - 4 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.