8 Inch (20cm) Bar Airstone for Aeration in Water Garden Koi Fish Ponds Aquariums
Sintered to 1000 Degrees for Fine Bubbles. Fits 1/8th (4mm) to 5/16th (8mm) Airline Fittings. Heavy Duty Bar Air Stone to successfully keep aquatic fish and plants aerated. Very durable, washable and sintered by high temperature.