General description You will receive 20 pieces of curtain track pulleys of the same size. These silent pulleys are designed for smooth operation, making them ideal for various rooms in your home or office. Technical specifications Wheel diameter: 14 mm Outer diameter: 18.2 mm Suitable for curtain rods with a width of 18-23 mm Installation Simply insert the pin hook into the eyelet at the bottom of the bracket. For curtains with holes or rings on the back, add hooks as needed. Usage Can be installed on windows in living rooms, studies, bedrooms, offices, piano rooms, and dining rooms. Designed for easy opening and closing of curtains, enhancing your morning routine. Other information Made of high-quality plastic and stainless steel for durability and rust resistance. Features a double-layer roller track for minimal noise during operation. All curtains can roll and slide smoothly on the rail. Note: Manual measurements may have an error of 1-3 cm. Color may vary due to lighting and