Curtain roller track system: As an essential accessory for curtains, it can help you fix the curtains stably and move the curtain track easily. Curtain track roller blinds: Long-lasting and durable. Curtain track rollers can roll freely and slide smoothly in the track. Automatic window curtain accessories: After good workmanship, good texture, you can use it with peace of mind Flexible curtain track ceiling installation: Simple, but very practical in use, bringing you great convenience Curtain track slide rail: The material and good workmanship ensure its durability and practicality Specification:No.15/No.13/No.11 Colour:As Shown Material:Plastic+Metal Package Contents: 20 * Curtain pulley Only the above package content, other products are not included. Note: Light reflection 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.