Specification Material: High-carbon Steel, Plastic Color: Black Surface Process: Electroplating Applicable Mattress Size: Over 10cm/3.94in Net Weight: 2kg/4.411bs Gross Weight: 2.7kg/5.951bs Maximum Load Capacity: 136kg/3001bs Package Size: 36*8*54cm/14.17*3.15*21.26in Product Size: 90*51*46-56cm/35.4*20.08*18.11-22.05in.