The Speedy Passing Rings, designed for 28mm curtain poles, work with Speedy Passing Brackets to let curtains move freely around bay windows. Sold in packs of 8, they come in coordinating colors like satin silver and chrome. These rings, similar to those with Nikola bay window poles, have plastic lining for a quiet glide. Perfect for bay windows, they offer support while allowing curtains to pass brackets smoothly.