The BRAND NEW FACTORY SEALED GULFSTREAM TROPICAL Mag-Float Glass Aquarium Cleaner is a small, compact cleaning tool designed for aquariums with a tank capacity of 30 gallons. With a size of 2 3/8" x 1 3/8", this magnetic glass cleaner is perfect for keeping the inside of your fish tank clean and clear. Made by the trusted brand Gulfstream Tropical, this cleaner is compatible with all water types and is an essential tool for maintaining the health and appearance of your aquatic pets. The model number for this specific cleaner is AGU030SM.