Quality and size: The plastic roller is made of quality material, ensuring it won't damage your curtains. The wheel diameter for the 14 mm curtain rail is 14 mm. Dimensions are approximate. What you get: Includes multiple curtain track rollers (long tracks not included) suitable for use with curtains. Comes in a quantity ideal for use in your home and for sharing with family and friends. Smooth sliding: These curtain track rollers move freely and slide smoothly within the track. Compatible with various track shapes for seamless operation. Versatile use: These ceiling-mounted flexible curtain rails suit most environments. Ideal for room dividers, window treatments, shower enclosures, trailers, or other compact spaces where privacy and space optimization are needed. Simple installation: Easy to install. Confirm the correct size for your setup. Compatible with beam curtain tracks. Easily moves along the track from open to closed positions. Color: White Material: Plastic Size: Height approximately 40 mm Package Contents: 50 x Ceiling Curtain Track Rollers Note: Light and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.