Good absorb ability and powerful magnetic attraction.
As you move the outer magnet, the inside magnet follows,hence cleans the glass.
The inside brush will not sink into the farthest depths of fish tank as it is floating.
1.Super strong magnets for use with varying glass thicknesses.
2.Floats avoiding lost magnets on the bottom of your aquarium.
3.Anti Scratch cleaning pads that are highly efficient in removing algae from glass.
4.Non slip griped handle improving cleaning action.