High Performance Independent Sofa Pocket Spring Unit for Professional Seating and Factory Supply Product Descriptions Product Name Pocket Spring Of Sofa Inner Spring Unit Material High Carbon Steel Wire Wire Diameter 1.0mm-2.3mm Head Diameter 4-6.5cm Middle Diameter 4.5-7.5cm Height 6-12cm Turns 4-7Turns Coils Counts According to the demand of clients MOQ Negotiate Woven Fabric 65-100g/㎡Or Can Be Customized Size Any Size Available Color White, Blue Or Customized Packing