These curtain track hooks have a smooth and are equipped with flexible rollers, allowing them to glide smoothly and quietly along the curtain track for easy opening and closing of your curtains. The curtain track rollers can be installed on curtain tracks/inner tracks and are suitable for curtains, door curtains, shower curtains, etc. Easy installation: the plastic curtain hooks gently into the curtain track; no tools are required. The white hooks complement various curtain styles for a simple and beautiful look. Made of high-quality plastic, these curtain track hooks are yet sturdy, quiet, and . Unlike metal hooks, they 't rust or stain your curtains. Package: 120 silent rollers and 8 threaded rollers.