Features: Experience seamlessly curtain movement with aluminum curtain rollers, for durability and smooth operates. These versatiled curtain gliders feature a quiet runner designing, reducing noise as you draw your curtains, and from aluminum for long use. For homeowners seeking a quiet living environment, as well as hotel and office managers enhances their space. Perfectly for bedrooms, living room, conference room, and hotel suites, these rollers provide a professional curtain movement experience. With 360 degree rotation capability, these curtain rollers adapt effortlessly to various curtain tracks, ensuring flexibility and ease of use. Specifications: Total length about: 4cm/1.57in Wheel diameter about 1.470cm/0.58in Total width about 1.70cm/0.67in Wheelbase about 0.09cm/0.04in Center pivots width 0.5cm/0.20in Quantity：20PCS Component： Aluminum and Plastic Type：Heavy Duty Anechoic Wheel/Aluminum Medium Bend Wheel Package Includes: 20PCS Curtain Rollers note: 1. Please allow 0-2cm error due to manual measurement. Please surely do not mind before bid. 2. The color may have different as the differences display,please understand