Made of high quality material, durable and practical to DURABLE & STURDY - High strength industrial grade tracks and pulleys can easily hold 100 lbs loads; Great for doors 1/2 inch and 1-1/8 inch thickness. material and forging process a safe and guaranteed life for your family.strong and sturdy: Save space: make your room look more spaciousSuitable for cabinets, etc.Easy to match: suitable for your home styleMaterial:Carbon steel + colour:blackPackage Contents:2 * 2 * End Caps2 * Floor 4 * Screws with nutsOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.