uxcell Aquarium Fish Tank Rain Bar Unit Outflow Gray Pipe Hose 13mmx19mm Product Name : Rain Bar Unit;Fit for : Aquarium, Fish Tank Material : Plastic;Color : Gray Length : Small:1.5cm/0.6"Max.:11.2cm/4.4";Tube Inner Dia. : 13mm/0.5" Tube External Dia : 19mm/0.7";Install Hole Diameter : 16mm / 0.6" Net Weight : 68g;Package Content : 1 x Aquarium Rain Bar Unit (6 Tubes)