Double flower hummingbird feeder attaches to any window by suction cup Each cup holds 1 oz of nectar RCS offers hundreds of clever accent items that will draw attention in displays and in the landscape Creative and unique birdhouses and feeders as well as their new colorful glass birdbaths are sure to make the bird lover in your life happy Bicycle Planters and plant stands are sure to make the gardener in your life overjoyed at the new ways to accent their flowers and gardens Features . Window Hook 2 Glass Cups Hummingbird Feeder. Made from high quality material Specifications . Weight 0 66 lbs