... spring,no sag spring,belong to sofa parts Foam Flex 5009, OKE clip strip, zigzag ... belong to sofa part or sofa fittingspring(1) Foam Flex 5009 (used with Zigzag springs) 1 ... packing: 130m/roll 7>.5009-200, packing: 125m/roll 8>.5009-220, packing: 95m/rollOur Foam Flex inside ... the sofa are made especially for edge and good shape of upholstery. Foam ...