Feature:1. No damage to the glass, easy for cleaning, wear resistant and durable algal removing knife.2. Anti-scratch sticker, when moving the downy brush, hook on the inner brush catch the garbage and algae stuck to the cylinder body.3. Magnetic brush and scraper can used replaceable, one brush for two uses.4. Suspension design to prevent the magnetic brush from sinking to the bottom of the cylinder.5. Non-slip handle design, easy to operate and convenient to use.Specification:Condition: 100% Brand NewItem Type: Aquarium Magnetic Brush Optional Mode: ZY-01S, ZY-01M, ZY-01L, ZY-01XLMaterial: ABSColor: As Picture ShownModeSuitable AquariumGlass ThicknessZY-01S20-30cm/7.87-11.81inchBelow 5mm/0.20inchZY-01M40-60cm/15.75-23.62inch5-8mm/0.20-0.31inchZY-01L60-100cm/23.62-39.37inch8-12mm/0.31-0.47inchZY-01XLAbove 100cm/39.37inch12-15mm/0.47-0.59inchUsage: Due to the strong suction of the product, rotate the two surfaces of the brush to 90 degrees before opening, and then forcibly break them apart to avoid pinching fingers.Package List:1 xAquarium Magnetic Brush 2 x ScraperNote:1. Keep the wearer of a pacemaker away2. Place out of reach of children