High Quality: It is made of high quality zinc alloy and is extremely durable. All curtain rollers can roll and slide smoothly on the track. Lightweight but strong gliders, easy to glide. Perfect Size: This metal rail roll measures: total width: 18mm; Total length: 14mm; Pitch: 9 mm. Versatile, perfect for curtains, sheers, sheers, jars, shower curtains. About Design: The hook is designed to hang on a 360 degree rotating hanging rail, which is modern and classic. The silent wheels are covered with rubber, which slides smoothly and quietly, creating a quiet and elegant living environment for you. Easy and Convenient: For pleated curtains with hooks, simply insert the hooks into the 39;grommet at the bottom of the bracket. For curtains with eyelets or loops on the back, simply add the hooks. Scope of application: Ideal for hanging curtain panels, room dividers , curtains, drapes and valances. Widely used in windows, cabinets, bedrooms, offices, restaurants, sliding doors, etc. Color white Shipped quantity: 20 pieces < p>Note: 1. Please allow error due to manual measurement. Thank you for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.