Professional Upholstery Essential Independent Pocket Spring Unit for Sofa Cushion Seating Frames Product Specifications Product Name Pocket Spring for Sofa Material Steel Wire Steel Diameter 1.8mm-2.3mm Head Diameter 5.3-6cm Middle Diameter 6.5-7.0cm Spring Height 10cm Coils Turns 4-7 Turns Coils Counts According to client demand MOQ 200 Pcs Fabric Weight 65-100g/㎡ or customized Length Size Any size available Color White, Blue or customized Packaging Compressed and rolled FOB