PREMIUM MATERIALS: The curtain hooks are made of durable PVC material, which is stronger and more durable than ordinary hooks, and has a stronger load-bearing capacity, so they will not crack or break. Compared with metal curtains, these curtain hooks will not stain your curtains with rust. EASY INSTALLATION: You just need to insert a few hooks into the curtain tracks and hang the curtain on the other end for easy installation and removal. If you have ever struggled with complex ceiling curtain track systems, you will love these curtain rod hooks. EASY GLIDE: Each curtain slider hook is specially designed with a smooth surface, the curtains can slide smoothly on the track, opening and closing are easier and reduce noise when sliding. This curtain hook has a flexible design and can be adapted to a variety of window shapes and sizes. GOOD COMPATIBILITY: The curtain rod sets contain 100 curtain rod hooks to meet your daily needs. Head diameter and body width 8 mm, neck diameter 4 mm,