This is a heavy-duty lifetime bed frame - "One size fits all" Universal - Twin/Full/Queen/California King/Eastern King, center support - 7 Legs with rug rollers and glides. An extra heavy-duty bed frame strong enough to support all bedding. Made of heavy-duty high carbon, recycled railroad rails with a water-based, lead-free finish. Unique wedge lock leg design becomes even stronger with use. Over-sized side rails provide additional support. Permanently attached locking system. Solid rivet construction increases durability. Rounded corners provide safety and recessed legs to offer additional toe room. Heavy-duty brackets, no tools required.