Wide Applications: Curtain track gliders is an ideal addition to your widow curtains, closet doors, shower curtains, room dividers, trailers, kitchens, bedrooms, making your life more convenient and provide your instant privacy. Suitable Size: the wheel diameter of these curtain track hooks is about 0.51 inch, the wheelbase is about 0.35 inch, and the overall width is about 0.43 inch. Curtain Track Rollers: The metal ring design is convenient to match different types of curtain hooks, and the dual wheel design makes the track rollers slide smoothly. Reliable Material: these ceiling curtain track gliders are made of a combination of sturdy plastic and stainless steel, which is not easy to break and can keep for a long time, lightweight and practical, suitable for your sliding curtain track for room divider or window treatment.