1A set of 100% brand new and high quality flat two-wheeled bottom floor guide 2Made of hardened carbon steel with black coating, it is of strong strength and long durability 3Size can be adjusted 4To maintain balance, to prevent the swing and to ensure smooth sliding of barn door 5Comes with installing hardware, so it's easy to adjust and install, safe to use for a long timeFeatures: A set of 100% brand new and high quality flat two-wheeled bottom floor guide. Made of hardened carbon steel with black coating, it is of strong strength and long durability. Size can be adjusted. To maintain balance, to prevent the swing and to ensure smooth sliding of barn door. Comes with installing hardware, so it's easy to adjust and install, safe to use for a long time. Great looking design goes perfect with many styles of barn doors. Specifications:Condition: 100% Brand newMaterial: Carbon steelColor: Black as picture shownSize: Approx. 120 * 65 * 50mm / 4.72'' * 2.55'' * 1.96''Package Included:1 * Set of Door Guide HardwareNote:Easy to install, but professional installation is highly recommended.