High Carbon Steel 1.8mm Wire Independent Pocket Spring Unit for Sofa Seat Cushion and Upholstery Furniture Factory Product Descriptions Product Name Pocket Spring for Sofa Items Material Steel Wire Steel Diameter 1.0mm-1.8mm(Can Be Customized) Head Diameter 5.3-6cm Middle Diameter 6.5-7.0cm Spring Height 6-12cm Coils Turns 4-7Turns Coils Counts According to the demand of clients MOQ 200Pcs Fabric Weight 70g/㎡Or Can Be Customized Length Size Any Size Available Color White,