This water bottle is specially designed with Lixit's innovative aquarium cage mount, making hydration easy for hamsters, mice, and other small animals living in tank-style habitats. Installation is simple - just attach the bottle to the included support wire and slide it securely over the edge of the aquarium. The support wire is the same trusted design used in standard Lixit bottles and can also be used to fasten the bottle to traditional wire cages, offering versatile mounting options. The clear bottle lets you monitor water levels at a glance, ensuring your pet always has access to fresh water. 8 ounce capacity.