This commercial grade bed frame is the next level option for supporting your mattress. The black frame is made of heavy-duty extra thick steel rails and is easily extendable to fit twin, full, or queen sizes. A center support rail provides extra support. Seven legs hold up this frame, four of which have caster wheels for smooth movement. Two of the wheels lock to immobilize the frame in place. Headboard attachment is made easy with the included two headboard brackets (headboard not included).