Adjustable arm: The float valve has an adjustable arm that can be adjusted over 180 degrees to adapt to different water levels. No power source or pump required, hand tight for leak-free operation. HIGH QUALITY MATERIALS: The Micro-float valve is durable, comes with an adjustable arm, and has good water inflow control, which will bring you a good experience. Automatic Water Fountain for Horses Made of Durable Materials: This float valve is durable, has an adjustable arm, and is made of high-quality PVC (polyvinyl chloride), which is corrosion-resistant for equine water fountains. Automatic Drinking Fountain Float Valve No Leaks: The automatic drinking valve comes with a rubber gasket to a tight, leak-free set; you can easily adjust the float arm. Wide range of applications: Tank float valves are suitable for ponds, chicken coops, livestock ponds, aquariums, aquaponics, aquaculture, and hydroponic reservoirs, and are more adaptable than traditional metal float valves. Material: PVC Color as shown Package Contents: 3 x Float 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.