Features: SUPER SILENT WATER PUMP - Ultra low noise AC submersible pump for 20,000 hrs longtime quiet operation even at night. You barely can't hear the running sound. Kindly Note:The Pump onlys fits for YOUTHINK Flower Fountain and Ceramic Fountain LOW POWER CONSUMPTION - The pet fountain circulating pump can continuously use onlys 1.5 degree a month,very energy efficient. 5.9ft long cable COMPACT & SAFETY - The replacement pump is onlys 1.7" x 1.6" x 1.2" ,which is extremely lightweight. 12V low AC voltage pump keep your pet safe. (Power adapter is not included) EASY TO CLEANs - Cleaning the pump every 2 weeks is essential to the longevity of the fountain. First,remove the pump cover; Second, remove the impeller cap by placing your fingernail underneath the small lip located;Third,remove the impeller and cleans the parts with soap and warm water SPECIALIZATION - The fountain pump is specially designed for YOUTHINK BPA free 1.6L indoor water fountain and ceramic water fountain.(Not Included AC Adaptor) Outlet Outer Diameter: Approx. 10.7mm/0.42 in Inner Diameter: Approx. 7.5mm/0.30 in Package List: 1 x Water Pump Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Check that the outer diameter of the product must match the inner diameter of the customer's nozzle before purchasing. .