PREMIUM MATERIALS: Curtain hooks are made of durable PVC material, which is stronger and more durable than ordinary hooks, and has a stronger load-carrying capacity, so it won't crack or break. Compared to 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 Runners and hang the curtain on the other end for easy installation and removal. If you've ever struggled with intricate ceiling curtain track systems, you'll love this curtain rail hooks. . EASY SLIDING: Each curtain glider hooks is specially designed with a smooth surface, the curtains can slide smoothly on the track, opening and closing is easier and reduces the 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 track sets contains 100pcs curtain track hooks to meet your daily needs. Head diameter and body width 9mm, neck diameter 3.4mm, ring opening diameter 5.5mm. Length: 17.3mm. Compatible with most track curtain hooks. APPLICATIONS: Ceiling Flexible Curtain Tracks look great in any setting Ideal for fixing curtain panels, room dividers, curtains, tulle and drapery. Widely used in windows, closets, bedrooms, living rooms, dining rooms, RVs, trailers.