Sturdy steel bracket with upgraded round corners. Fine black powder-coated barn door bottom roller guide is tough, durable, and rustproof. Flush with the floor or ground, no screws protrude from the bottom, no groove required for the door, and no drilling on the floor. Perfectly shaped with round corners, countersunk holes, and recessed screw heads to help keep children and toes safe. Easily mounted for various applications. Heavy-duty roller door guide can be fixed to the wall with screws. Low-profile sliding gate rollers work well indoors and outdoors, such as in living rooms or DIY projects on concrete slabs with carpet. Helps keep doors or gates aligned with the wall. Includes step-by-step instructions for easy assembly. Smooth and quiet operation with glide-like performance. Bottom adjustable roller wheels feature built-in ball bearings for smooth, effortless rolling. Designed to keep the door balanced and stable from both sides. Requires minimal installation space and allows for precise roller alignment with the door. Adjustable roller position to fit different barn door thicknesses. Suitable for doors up to 2-13/16 inches thick when using two rollers, and up to 3-5/8 inches thick with the inside roller removed. Rollers can be adjusted within the track to fit the door panel. Compatible with most closet and pocket doors.