These hanging forms are a great way to save space on the retail floor. The mannequin has a flat surface that is ideal for displaying shirts, sweatshirts, tanks, and many more. These hanging forms are made of a sturdy plastic that are easy to manage and are great for long term use. The mannequin features an open hook hanger that is great for clothes racks, or grid walls. These hanging forms are guaranteed to get your merchandise noticed. The inside diameter of the open hook is 1 7/16".