Feature: 1. Ergonomic Design: The fish tank algae scraper is ergonomically designed for a comfortable grip and ease of use, with a reinforced magnetic design that sticks tightly to the glass without coming off. 2. Replaceable: The aquarium glass cleaner comes with an interchangeable scraper and a magnetic brush scraper that can be used interchangeably to make two brushes in one. 3. Floating Design: The fish tank glass cleaner has a separate automatic floating design, the two poles automatically float to the surface and do not sink to the bottom of the tank without salvaging. 4. Notice: Fish tank glass cleaner has too much suction. When opening, rotate the two brush surfaces to 90° and then break them apart. 5. Safe Material: Aquarium algae scraper is made of high quality plastic, non toxic and odourless, safe and environmentally friendly, durable. Specification: Item Type: Aquarium Magnetic Brush Material: Plastic Size: Approx. 115x65x50mm / 4.5x2.6x2.0in Use: Fish Tank Cleaning Magnetic Brush Applicable Glass Thickness: 8-18mm/0.3-0.7in Fish Tank: 80-200cm/31.5-78.7in Fish Tank. Package List: 1 x Magnetic Brush 1 x Ordinary Scraper1 x Carbon Fibre Scraper1 x Manual Note: 1. Do not approach or use with a pacemaker.2. Please allow some error in manual measurement.