[STRONG STEEL BRACKET, IMPROVED ROUND CORNERS] - Fine black powder coated barn door floor roller guide is strong, durable and rust-proof, flush with floor/floor, no screws protruding from floor, no groove required for door, no drilling up the floor. Perfectly shaped with rounded corners, countersunk holes and countersunk screw heads, this wall guide keeps kids and toes safe from injury.[EASY TO ASSEMBLE FOR MANY APPLICATIONS] - Heavy duty skew roller door guide can be wall mounted/installed with screws, flat sliding gate rollers look great both indoors and outdoors for areas like living room or DIY project like carpet on concrete slab well made, works perfectly to keep the door/gate lined against the wall.[SMOOTH QUIET, SLIDE LIKE BUTTER]- Our bottom adjustable caster wheels contain built in ball bearings, ensure a smooth and effortless roll , and not like others which have big wheels, only two small bearings, keep the door balanced and stable from both sides, need only small space to install, provide more latitude to perfectly align the casters with the door.[ADJUSTABLE ROLLER POSITION] Fully adjustable for different thickness swing gates, by adjusting the position of the rollers in the track to suit your door panel, will accommodate most closet pocket doors.Note: The data are all measured manually. Please allow an error of 1-3cm. Due to the difference between light and display, there is a certain color difference, which depends on the actual object received