uxcell Plastic Aquarium Water Flow Control Valve Hose Pipe Quick Connector Orange Black Easy to use, connect and fasten the hose firmly to the adapter then fasten node firmly. Fast switch, use together with water pump, external filter can conviniently and easily adjust water flow. Overall Size : 10 x 3.7 x 2.7cm /3.9" x 1.5" x 1.1"(L*W*Dia);Material : Plastic Fit Water Tube Dia : 12mm/ 0.47";Net Weight : 30g;Color : Black;Design : 2 Way Outlet Package Content : 1 x Aquarium Throttle Valve;Product Name : Aquarium Throttle Valve