[]The adjustment shaft adopts engineering plastic instead of metal screw, and you don't need to worry about . You can adjust the ideal angle by hands and no extra tool. The water level controller can work with water purifier and normal water bucket, a superior supply for both fish tanks and aquarium. [EASY STORAGE]The floating valve is very common size, which is easier for adding water and storage. Floating ball is small in volume and will not occupy too much space in the fish tank. [FLOAT VALVE] float valve: the adjustment shaft adopts engineering plastic instead of metal screw, and you don't need to worry about . You can adjust the ideal angle by hands and no extra tool. Furthermore, the multi-purpose bracket can fix water replenisher firmly. The water level controller can work with water purifier and normal water bucket, a superior supply for both fish tanks and aquarium. [WIDE APPLICATION]The aquarium water adding device can be used to replenish fresh water in fish tanks and improve fish living environment, creating a great deal of that your fish loves. The fish tank water changer features fully automatic start and stopping, no electricity is needed. [VARIOUS INSTALLATION]The ATO system is easy to hang on to your aquarium sump. double hanging device can be directly hung on aquariums or fish tanks. The updated water level adjustment device, which enjoys a larger rotation range, replaces the bracket adjustment, and the aquarium water changer can be applied to water level range from 0.5 to 15 cm. Item Type:Aquarium Floating Ball Valve Size:15cmx5cmx5cm(LxWxH) Features: 1. The high-quality acrylic is and has strong strength. 2. Installation ways are much easier and convenient. 3. You can adjust it by your hands without needing any tools. 4.It will not rust and have a long service life. 5. Using the water pipes, it is and easy to store. Colour: Material:plastic Package Contents: 1 x Aquarium Fish Tank Float Ball Valve Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.