Key Features Genuine Oase Aquarium accessory For use on hose with internal diameter from 9mm to 25mm Used to clear the hose and keep it clean and clear Made from superior quality material Sturdy bristles, to reach all parts effectively Oase Aquarium Spiral Brush, a new accessory for your aquarium. The Oase 8cm aquarium spiral brush can be used to clean out your airline or hose tubing. The brush can be used on hoses with an inner diameter from 9mm to 25mm. Cleaning the hose on a regular basis will ensure the filtration system is kept at its best and will clear blockages and algae build up. Dimensions: 50 x 30mm Spiral Dimension: 1500mm L Suitable for hoses: Internal diameter 9mm-25mm