Blue Scrub Sponges maintain their shape and cleaning performance even after repeated use on heavy-duty surfaces. Carborundum Sponge features high-density sand planting technology, needing only water to effectively remove stubborn burnt marks and rust from pot bottoms. Nano Cleaning Sponge can be freely cut to fit different needs, ideal for pot cleaning, knife sharpening, and various kitchen and household cleaning scenarios. Second-generation sand-infused Heavy Duty Sponge has a tight structure, resists breaking when folded, reduces sand loss, and extended service life. Rust Eraser's robust cleaning power eliminates tough stains without relying on harsh detergents, making it an eco-friendly kitchen cleaning option.