1pc Magnetic Aquarium Glass Cleaner Brush, Mini Square Plastic Algae

Product model CL-01, suitable for fish tank thickness ≤6mm/0.24in thick, suitable for fish tank size less than 30cm/11.8in

Product model CL-03, suitable for fish tank thickness ≤2-10mm/0.08-0.39in thick, suitable for fish tank size less than 60cm/23.62in