These MBM Destroyit shredder bags come directly from the manufacturer and are specifically designed for use in Destroyit paper shredders. If your MBM Destroyit shredder model contains 2501, 2502, 2503, 2600, 2601, 2602, 2603, 2604, 3102, 3103, 3104, 3800, 3801, 3802, 4001 and 4203, then these bags will work for you.