Product Name: 1.7 meter water changer Product Size: Hose length: about 1.7m/66.9inch, spout size 60mm x 45mm/2.4inch x 1.8inch, tube inner diameter 18mm/0.7inch Product features: large space, imported sand washing, remove dirt and clean water thoroughly, round filter to prevent small fish and gravel from being sucked out. Product Usage: easy to use, just put the nozzle and hose in the aquarium, squeeze the pump ball a few times and the water will start to flow. Product use: for aquarium drainage and irrigation, widely used in home and office. Product package: a hose, a hard tube, an air bag.