[Features] Package Includes: The package contains 10 pcs curtain track rollers, sufficient quantity for your use and replacement. Material: The curtain rail track pulley made of high-quality plastic and alloy, all curtain rollers can slide smoothly in the guide rail. Lightweight but strong. Quiet: There is a unique mute block design in the middle of the curtain rail gliders, these hooks will make the least noise as you pull the curtains. Easy to Use: For pleated curtains with needle hooks, simply insert the needle hook into the buttonhole at the bottom of the bracket. For curtains with holes or loops on the back, just add hooks. Use range: The silent pulley curtain hooks ideal for for holding curtain panels, room dividers, drapes, sheers, and valances. Widely used in windows, closets, bedrooms, office, restaurants, sliding doors, etc. [product information] product name:scroll wheel color:White Material:POM Size: 1.7x2.9cm Packing list (you can get after purchasing one item): scroll wheelx10 Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.