High Quality: Made of high-quality zinc alloy, ensuring durability. All curtain rollers operate smoothly on the track. Lightweight yet sturdy gliders allow for 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 design suitable for curtains, sheers, mason jars, and shower curtains. Design Features: The hook is designed for use with a 360-degree rotating hanging rail, combining and classic styles. Silent rubber-coated wheels ensure smooth and quiet sliding, contributing to a calm and elegant living environment. Easy to Use: 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. Application: Ideal for curtain panels, room dividers, drapes, and valances. Suitable for use in windows, cabinets, bedrooms, offices, restaurants, and sliding doors.