[Premium Material]: The barn door wheel is made of zinc alloy and nylon, it is durable with stable characteristics and long service time. [Noise Reduction]: The sliding door hardwarehelps the door to maintain balance, prevent swing and sliding. slight with a gentle nudge and they are very quiet. [U-shape Groove]: U-shape groove design of the barn door wheel, surface can reduce the friction, ensuring the strong and bearing capacity. [Space Saving]: The barn door wheel can help moving the door to save your space, decorate and . [Exquisite craftsmanship]: Using for barn door roller production, stable performance, long-term use. Colour: black Material: zinc alloy + nylon Size: 70x35x15mm Package Contents: 2 * Barn Door Wheel 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.