PREMIUM MATERIALS: Curtain hooks are made of durable PVC material, which is stronger and more durable than ordinary hooks, and has a higher load capacity, so it won't crack or break. Compared to metal hooks, these curtain hooks will not stain your curtains with rust. EASY INSTALLATION: Simply insert the hooks into the curtain runners and attach the curtain on the other end for quick installation and removal. Ideal for those who want a simple alternative to complex ceiling track systems. EASY SLIDING: Each curtain glider hook features a smooth surface that allows curtains to slide effortlessly along the track, making opening and closing easier and reducing sliding noise. The flexible design adapts to various window shapes and sizes. GOOD COMPATIBILITY: The set includes 100 curtain track hooks to meet everyday needs. Head diameter and body width: 9mm, neck diameter: 3.4mm, ring opening diameter: 5.5mm, length: 17.3mm. Compatible with most standard curtain tracks. APPLICATIONS: Ceiling flexible curtain tracks blend well in any environment. Perfect for hanging curtain panels, room dividers, curtains, tulle, and drapery. Suitable for use in windows, closets, bedrooms, living rooms, dining rooms, RVs, and trailers.