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 Material: The mini float valve with adjustable arm is made of high-quality plastic and brass, more stable and will not rust, providing reliable water inlet control performance. Dimensions: The float valve uses 1/2 NPT pipe threads; this is common in the plumbing world and has thread sizes of approximately 1/2 inch with standard washers to eliminate leaks. The applicability exceeds that of traditional metal float valves. Wide range of applications: Tank float valves are suitable for ponds, chicken coops, livestock watering tanks, aquariums, aquaponics, aquaculture, and hydroponic reservoirs, and are more adaptable than traditional metal float valves. Packing quantity: 2-pack of water tank float valves, designed to reduce the time spent filling and checking water tanks, offering excellent sealing performance under high pressure; features a compact float control design that can withstand greater fluid pressure. The water level floating principle of the float ball is used to control the water inlet and outlet switch to achieve a constant water level effect, maintain sufficient water volume, and help keep water clean. Cattle drinking water usage is significantly reduced by more than 30%, helping lower wastewater discharge. Color: As shown in photo Material: Plastic and metal Package Contents: 2 x Float valve Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement allows an error of +/- 1-3 cm.