Made of premium material for durable and practical use Unique handle design, convenient to use Floats avoiding lost magnets on the bottom of your aquarium Anti scratch cleaning pads that are highly efficient in removing algae from glass Super can apply for use with varying glass thicknesses. SunSun Magnetic Scraper is a float type magnetic scrap and scrub device that make aquarium maintenance easier and quicker without submerging hand into water. This product is made of strong and reliable material which is suitable for both freshwater and marine aquarium use.