FLAT BOTTOM DESIGN - Flush bottom design allows door needn't grooved and do not destroy your beautiful floorDurable and working smooth for maximum efficiency and quiet.ADJUSTABLE GUIDES TO FIT INTERIOR & EXTERIOR DOORS with widths from 15 inch to 3 inch INCHES EXCELLENT QUALITY with Heavy duty steel .HASSLE-FREE INSTALLATION - Ours is a complete package, and SO EASY to install and assemble. With included screws, installation guide, and the wrenches needed to tighten all the hardware, this is the only all-in-1 sliding guide that you'll ever need.GUARANTEES A SMOOTH SLIDE - We are using real bearings in our bottom guide, so you can enjoy a quiet and smooth slide every time. Also, the roller guide is fully adjustable, so you can use it with almost all of barn door.EASY TO USE - Mount to the wall with screws, and no groove required for door. By adjusting the position of the roller in the track to fit your door panel. No need to drill holes in the floor and it looks great both indoors and outdoors.Allow the head of a flat head or screw to sit flush with or below the surface. Improves the appearance of the floor guide and protecting the screws or bolts and increasing their structural lifetime. Moreover, it can prevent scratching the door from exposing harsh edges.Colour:blackMaterial:metalSize:Length: about 125cmPackage Contents:1 * Barn Door Guide1 * ScrewsOnly the above package content, other products are not included.Note: Light 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.