MALIDA Float Ball Valve Shut off 3/8 inch , 1/4 inch Automatic Feed Fish Tank Aquarium RO Water 3/8inch or 1/4inch float ball valve Boat length:3"(76mm) Boat diameter:1.8"(45mm),Body length:6"(152mm) Pressure:0.02-0.8MPa Float Ball Valve Shut off Uses 1/4 inch or 3/8 inch Supply Tube