This floor guide are made of steel which ensures high level performance for your sliding barn door. Two point screws slots design provide a to prevent the door from swinging to the sides. To ensure a successful installation, please check the space between door and wall before purchase. Features - Color: Silver. - Material: Steel. - Size: 12.00X6.40X4.00cm/4.72X2.52X1.57in. - This width adjustable floor guide works for both pre-grooved and non-grooved door. Unique ball bearing design ensure it work smooth and stable. - Flat bottomed design and rounded edges protect your toes and knees from injury. - Please ensure the size are fit with the door you will install before purchasing. - Made out of steel material. Durable and reliable. Features a bright modern style. - This floor guide must be a for DIY your barn door, make it smoother. Package list: 1 x floor guide with parts