Features:Good absorb ability and powerful magnetic attraction.Move the outer brush to drive the inside brush， hence cleans the glass.Floating function make the inside brush will not sink into the bottom of fish tank.Super strong magnets， suitable for different thickness of fish tank.Scratch resistant cleaning pads avoid scratching your fish tank and highly efficient in removing algae from glass.Antiskid griped handle， more convenient to clean and brush.Specifications:Type: Cleaning toolMaterial: Plastic and high magnet materialItem size: 7 * 3.5 * 6.7cm / 2.75 * 1.37 * 2.64in (L* W * H)Item weight: 96g / 3.37ozPackage size: 16.5 * 10 * 4 / 6.49 * 3.93 * 1.57in (L* W * H)Package weight: 119g / 4.19ozPackage list:1 * Magnetic fish tank cleaner