Zep 40 LV Glass, Mirror & General-Purpose Cleaner is a heavy-duty multi-surface formula designed for glass, mirrors, countertops, tile, and general surfaces. It removes stubborn dirt, grime, grease, and film and delivers a streak-free finish strong enough for commercial and institutional use. The Blue Microfiber Rag is a reusable, lint-free cloth suited for buffing glass, mirror, and general hard surfaces after applying the cleaner. It helps achieve a clear, streak-free finish on glass and polished surfaces. Together, this combination delivers commercial-grade cleaning power on glass and multi-surface areas — the heavy-duty cleaner removes stubborn grime and film while the microfiber rag delivers a clean, streak-free buff on glass, mirrors, and hard surfaces.