About WJ: WJ is a professional bird research expert. We produce hummingbird feeders, wild bird feeders, bird baths, and oriole feeders, all of which are works of art. Our Quality: Hummingbird feeders are made from high-quality plastic and are virtually unbreakable. Size and Capacity: The hummingbird feeder measures 11.6"x 5.6"x 2.6" and the two reservoirs have a total capacity of 16 ounces. Installation and Cleaning: For initial installation, press the entire hummingbird feeder horizontally onto the glass, then pull the suction cup handle upwards to the designated position. For cleaning, simply remove the red reservoir, which is very convenient. After-Sales Service: We always strive to provide our customers with the best quality products and services, so you can choose our products with confidence. We are sure you will like it. If you are not satisfied with our products, we will refund you in full. If you have any questions about our products, please contact us. We provide good solutions and respond within 24 hours.