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, with no screws protruding from the bottom. No groove required for the door and no drilling on the floor. Designed with round corners, countersunk holes, and recessed screw heads to help protect children and prevent injuries. Easily mounted for various applications. Heavy-duty roller door guide can be secured to the wall with screws. Low-profile sliding gate rollers suit both indoor and outdoor use, ideal for spaces like living rooms or DIY projects such as carpet on concrete slab. Helps keep doors or gates aligned with the wall. Includes step-by-step installation instructions for simple assembly. Smooth and quiet operation with glide-like performance. Bottom adjustable roller wheels feature built-in ball bearings for smooth, effortless rolling. Ensures door remains balanced and stable from both sides. Requires minimal installation space and allows for precise roller alignment. Fully adjustable to accommodate 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 with the inside roller removed. Rollers can be adjusted within the track to fit the door panel. Compatible with most closet and pocket doors.