... guardMaterialmetal sheetApplicationMattressmanufacturing methodstamping Packaging & DeliveryCarton size: 43.5X21X15cm (AK-004) 39X21X17CM (AK-002, AK-003,AK-005)Packaging Detail: 50 pieces per bundle ,400 ... to order, usually within 30 days after receiving the deposit(AK-002, AK-003, AK-004, AK-005 are available from stock)