PERFECT SIZING: - 8.3* 4.3* 8.7 water feeder and dispenser holds up to 33.8 oz of water. The 4.7 diameter bowls are the perfect size for small animals, such as rabbits, chinchillas, guinea pigs, hedgehogs and ferrets. TWO WAYS TO USE: - The automatic feeder and drinker can be placed on the floor or hung on the cage. The rotary knobs allow you to hang them firmly on the cage. A flat bottom also allows them to be put on the floor, when you decide to take your pets out of the cage. AUTO-REFILL DESIGN: - The pet feeder set effectively reduces the frequency of food and water refills. Gravity-feed technology does all the work for you. They dispense food and water while your pets empty the bowls. SR MATERIAL: – These dog food dispensers are made of polypropylene, which can be washed at high temperatures. SMOOTH DELIVERY: – The gravity feeder has a larger opening with a reasonable slope so that grain can be deflected smoothly into the bowl. On the other hand, there is a twist lock on the