Features: LARGE CAPACITY: The hanging automatic water dispenser can hold up to 8.5oz (S) and 17oz (L) water. Perfect size for small animals, such as for cat, puppy, rabbit, chinchilla, guinea pig, hedgehog, and ferret. EASY TO INSTALL: Automatic pet waterer can be screwed on the cage easily. Suitable for wire cages: S for wire for gap larger than 3 for cm/1.2 inches; L for wire for gap larger than 4 for cm/1.6 inches . AUTO-REFILL DESIGN: Pet automatic water feeder effectively reduce the frequency of water refills. Gravity feeding technology does all the work for you. They dispense water as your pets empty the bowls. SAFE MATERIAL: These dog water dispensers are made of plastic material, which is non toxic and durable. Color: We offer 3 colors of for cat water dispenser, Green, White, and Pink. Specifications: Material: Plastic Color: Green/White/Pink Size (Approx.): S-16x11.8x17cm/6.30x4.65x6.69in L-21x15x20cm/8.27x5.91x7.87in Weight: Approx.290g Capacity: S-250ml/8.5oz L-500ml/17oz Package Includes: 1 x Pet Automatic Water Dispenser (Green/White/Pink, S/L) note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!