Quality and Size: The plastic roller is made of quality material, you don't have to worry about damaging your beautiful curtains; The dimensions are approximate. The wheel diameter of the 14 mm curtain track is 14 mm. What you get: You can get several curtain track rollers (excluding long tracks) to fit large curtains, specific quantity according to your choice, as well as use for each of your houses, enough quantity to even give to your family and friends. Smooth sliding: These curtain track rollers can roll freely and slide smoothly inside the track. Curtain tracks are used in a variety of tracks and slide very smoothly. Versatile use: These flexible ceiling curtain tracks look great in most environments. Curtain tracks are excellent room dividers, window decorations, shower tracks, trailers or most compact spaces, increasing your space and giving you instant privacy. Easy installation: Easy to use, check the appropriate size for your home for installation, suitable for beam curtain track; The holder moves easily from track to track, from open to closed. Color: white. Material: plastic. Size: total height approx. 40 mm Package contents: 50 x Ceiling curtain track Only the above package contents, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The allowed measurement error is +/- 1-3 cm.