Floating Ball Valve Automatic Water Filler. Feature: 1. This Autotopoff System is Easy to Install on to Your Aquarium Sump. Can Meet 16/12 Water Tube. 2. Float Valve for Manual Adjustment, No Other Tool, No Metal Screws, No Corrosion. 3. The Bracket is Made of High Quality Material, Stable and Heavy Enough, Not Easily Knocked. 4. It Can Be Installed on the Bracing Tank and the Wall of the Fish Tank. The Water Level Adjustment Float Replaces the Bracket Adjustment. There Are Three Installation Methods, Which Are Simple and Convenient. 5. This Water Filler is Specially Designed for Filling Water for Aquarium or Fish Tanks in Order to Replenish Those Evaporated Water and Control the Water Level and Prevent Those Aquarium Creatures Form Dying Due to the Lacking of Water. Specification: Item Type: Auto Water Filler Material: Acrylic, Plastic Assembly Length: Approx.150mm/5.9in Adjustable Height: Approx.80~140mm/3.15~5.51in Floating Ball Size: Approx.40x56mm/1.6x2.2in Weight: Approx.72g/2.5oz Application: Automatic Tank Refill Package Includes: 1 X Set Auto Water Filler(5pcs Parts) . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.