The JW® Pet Clean Cup Feed & Water Cup is easy to attach to any bird cage. It can quickly be removed and refilled so your pet bird has a clean supply of food or water. The clear plastic hood acts as a guard that keeps debris inside the cage and doesnt block visibility so that your pet bird feels comfortable and safe placing its head inside to eat or drink. This pet bird accessory fits all bird cages, including vertical and horizontal bars with a clever screw-on design. The cup is easily twisted and lifted to remove it from the holder for quick cleaning. durable and dishwasher safe.