Pioneer 12" Flat-attach Speaker Foam Surround Repair Kit - 2F12Complete 2 speaker foam surround installation kit Some of the models that use this foam include : Pioneer CL 100, CL100, CS 9000, CS9000, CSD 9001, CSD9001, CSF 5000, CSF5000, CSF 9001, CSF9001, CSG 300W, CSG300W, CSG 301WA II, CSG301WAII, CSG 5000, CS5000, CSG 5000F, CSG5000F, CSG 9900, CSG9900, S 1011, S1011, 141735, 150576, CS G303 and others that match the measurements below Same surrounds that professional reconers use; NOT cheap Chinese