【Size】Wheel diameter: 14.5mm/0.57inch; Wheel spacing: 9mm/0.35inch. 【High Quality】Curtain track carrier glide rollers is made of high-quality metal alloy and plastic, with a galvanized surface, beautiful and not easy to rust 【Smooth Glide】Curtain track pulley hooks can slide smoothly in the track without getting stuck 【Easy to Install】Measure the size of your home first, and install it after getting the curtain roller skates. For curtains with rings, you only need to add hooks, so even novices can quickly get started 【Application】Drapery rail sliding glider the application is very wide, very suitable for most rails and curtains, such as windows, bedrooms, offices, restaurants, hotels, sliding doors, etc Scope of application: Very suitable for fixing curtain board, room partition wall, curtains, tulle, curtains, etc., to add beauty and practicality to your living space. Secondly, because it is not easy to damage or deformation even if it is used for a long time, it is used for Windows, wardrobes, bedrooms, offices, restaurants, sliding doors and other places.