Factory Wholesale High Carbon Steel Coil Pocket Spring for Sofa Cushion Custom Size Compression Manufacturers Product Descriptions Product Name Pocket Spring for Sofa Items Material Steel Wire Steel Diameter 1.8mm-2.2mm(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, Blue Or