1.Made of high quality carbon steel material, non-toxic, sturdy and durable in use. 2.Exquisite workmanship, high hardness, not easy to deform. 3.To maintain balance, to prevent the swing and to ensure smooth sliding of barn door. 4. Can be used repeatedly, convenient to use. 5.Comes with installing screws, so it's easy to install and safe to use for a long time. Material:Carbon Steel Color: Black Size: 45*27*48mm/1.77*1.06*1.89in(Approx.) Package Contents: 3 * Door Guide 3 * Pack of Installing Screws 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.