Floor guide: Plastic, Prevent the door from swinging when sliding and keep it in balance and stable. Spacer: Steel, Connect the rail on the wall. Only hardware is for sale. The item "9FT DIY Bypass Sliding Barn Double Door Hardware Track Kit Closet Black Wheel" is in sale since Tuesday, January 7, 2020. This item is in the category "Home & Garden\Home Improvement\Building & Hardware\Doors & Door Hardware\Other Door Hardware".The seller is "winsoonhardware" and is located in Pomona, California. This item can be shipped worldwide.