High quality: The track curtain hooks are made of high quality plastic. These curtain rail gliders won't stain your curtains due to rust compare to metal ones. Flexibility sliding: The white curtain hook can perfectly fit the curtain, and the sliding is very flexible and smooth. It can move quietly and evenly without dragging, effortlessly, and easy to open and close. Easy to install: The installation of curtain hook glider is simple and convenient, saves time and effort. You only need to add them to the curtain rails, no additional tools. Wide applications: The curtain sliders can be applied to the track type curtain, the pulley of curtain hooks sliding on the track type curtain easily, more efficient, to make your room more comfortable. colour: white Material: plastic Size: 29mm Package Contents: 200 x Curtain Gliders Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.