High Quality: Made of high-quality zinc alloy, this product is extremely durable. All curtain rollers glide smoothly on the track. Lightweight yet strong gliders ensure easy movement. Perfect Size: This metal rail roller measures 18mm in total width and 14mm in total length, with a hook height of 9mm. Versatile and suitable for curtains, sheers, mason jars, and shower curtains. About Design: The hook is designed for use with a 360-degree rotating hanging rail, offering a modern and classic look. Silent wheels are rubber-coated for smooth and quiet sliding, contributing to a calm and elegant living environment. Easy and Convenient: For pleated curtains with hooks, simply insert the hooks into the grommet at the bottom of the bracket. For curtains with eyelets or loops, attach the hooks directly. Field of Application: Ideal for hanging curtain panels, room dividers, drapes, and valances. Suitable for use in windows, cabinets, bedrooms, offices, restaurants, and sliding doors.