Multiple UseIt can be attached to the cage and used. This is one of the main methods of use. Since the bowl stand and the bowl are separate, there are other uses. You can use it right away. You can use it on cats. Feed rabbits, parrots and other small animals. Holding area stays cleanHanging design prevents more food and water being taken out of bowls from spilling and sliding by compared to a standard bowl on the floor of the animal cellar. Two bird bowls of different sizes The dimensions are 12 * 5 cm and 10 * 4.5 cm. Different sizes can only match the food and drink functions. You can use a smaller bowl to drain the water, which may encourage you to change the water more often. Or it can be used to hold pet snacks etc. Two sizes to meet your different needs. Easy to Use What you need to do is fix the iron plate and the bowl stand to the cage with special screws. You can tighten them by hand directly without tools. Then place the bowl on a special bowl stand. (Iron sheet, special screws and bowl stand are included) Easy to cleanOur pet bowls can be attached to pet cages such as cat cages, cages for dogs, bird cages, etc. They are very stable. Don't worry about animals spilling their water and food. Simply clean and wash the bowl, then put it back on the bowl stand. Very convenient and practical. Product Features: Easy installation inside or outside the cage and easy cleaning with the water. The design makes it easy for birds to get food from this automatic feeder. Suitable for birds, hamsters, rabbits, mice, squirrels, etc. Also as a gift for your friends who love birds. Specification: Material: stainless steel Color: silver.< /p> S: 10 x 4.5cm / 3.94" x 1.77" M: 12 x 5cm / 4.72" x 1.97" Scope of delivery: 1 * bird feeder bowl (S) 1 * bird feeder bowl (M)